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China Debuts "Aegis" Destroyers
http://www.afcea.org/signal/ ^ | James C. Bussert

Posted on 07/05/2005 8:41:41 AM PDT by sukhoi-30mki

China Debuts Aegis Destroyers

By James C. Bussert July 2005

A coastal force extends its reach and capabilities.

The People’s Liberation Army Navy recently introduced two domestically designed and built guided missile destroyers that include Aegis-type radars and related technologies. Known as Project 052C guided missile destroyers (DDGs), the ships feature Aegis-type phased array panels, vertical launch systems, long-range missiles and considerable command and control. These capabilities were not found on any previous Chinese-built DDGs.

The design of a lead ship with prototype Aegis radar, combat direction links and a vertical launch system (VLS) into a small 6,600-ton hull is an ambitious development. The smallest U.S. Navy Aegis ship with VLS is the 8,400-ton Arleigh Burke-class DDG 51. Russia had its Aegis-equivalent Sky Watch system only on 30,000-ton aircraft carriers. The nine years of sea test development prior to the U.S. Navy’s first installing Aegis on the warship USS Ticonderoga CG 47 indicates the complexity and the engineering effort necessary to build a successful Aegis system. The fact that the Soviet Union gave up on an Aegis system after years of frustrating problems on two warships also shows the extreme difficulties.

China is building only two 052C ships, and the next ship under construction will have a different Aegis and VLS suite. Even so, the mere existence of People’s Liberation Army Navy (PLAN) warships with long-range phased array radar, communications to other naval assets and over-the-horizon ship-to-ship missiles (SSMs) complicates planning by other naval powers for the Taiwan Straits or other disputed Pacific Ocean waters.

The first sea platform for the U.S. Navy Aegis was the trial ship USS Norton Sound AVM-1 in 1974. The first warship full-up four-panel Aegis system was on the Ticonderoga in 1983, which had 50 meters between the fore and aft deckhouse arrays. The first Aegis destroyer with the single deckhouse array SPY-1D was the 8,400-ton Arleigh Burke lead ship in 1989. More than 50 DDG 51-class ships have been built in this highly successful and constantly upgraded class of warships. All cruiser and destroyer SPY-1 variant antennas are 3.7 meters in diameter and measure 13.5 meters vertically, and they have an F-band frequency of from 3100 to 3500 megahertz.

In 1988, the Soviet Union installed its first Aegis-type Sky Watch on two full-deck aircraft carriers. Each of the four square-plate phased array antennas measured about 5 meters in diameter, and their frequency was estimated to be F-band at about 850 megahertz. This is similar to the Top Plate radar that was mounted on previous Soviet carriers for long-range detection. The port array was 60 meters forward from the starboard array.

The Soviets seem to have had considerable trouble in exercises with their Gorshkov phased array radar, as mechanical scanning Top Sail/Top Pair radars replaced it on the next Soviet carrier, the Tblisi. Sea operations attempting to successfully target incoming threats using external ship or aircraft platforms also seem to have failed.

China’s first 6,600-ton missile destroyer with an Aegis-type four-plate phased array antenna is the Lanzhou DDG 170 launched in Jiangnan Shipyard in April 2003. The DDG 171 followed six months later. Their undesignated Chinese radar is different from the Aegis or Sky Watch phased array radars. This radar is C-band instead of L- or F-band, and it has convex curved arrays instead of flat panels. The four arrays are 4.6 meters high x 3.9 meters wide, and they face out from the forward deckhouse as on the U.S. DDG 51. China reportedly has purchased two advanced Russian phased array radars for a follow-on larger air defense DDG 103 ship that is under construction at the Dalien shipyard. The short one- or two-ship production runs are a trademark of post-Luda DDG designs.

When the U.S. Navy installed its first MK 41 VLS on the Ticonderoga-class Aegis cruiser CG-52 in 1989, it featured 64 missile cells forward and 32 cells aft. The MK 41 VLS cells launch multiwarfare missiles. The first Russian VLS trials were with SAN-6 missiles on the fourth Kara cruiser in 1977, and the 8,000-ton Udaloy DDG had eight SAN-9 VLS hatches. Both SAN-6 and SAN-9 VLS systems featured round modules with eight cells each and had a large unique Top Dome or Cross Sword acquisition and guidance fire control director and radar/datalink.

The PLAN DDG 170 and 171 feature six HHQ-9 VLS launcher modules forward of the bridge and two aft by the helicopter hanger. At first glance the Chinese VLS launcher looks like the Russian VLS, but there are major differences. The Chinese VLS modules each have two fewer cells than the original Soviet VLS, and the Russian VLS has only one hatch, as eight cells with blow-out patches rotate under it to launch. The rationale that the Russian eight-cell modules were too large for the smaller Chinese DDG hull does not seem valid because the diameter of the Russian module is only 1.5 feet larger than the Chinese module. Possibly, China used S-300 missiles, and Russia provided no naval SAN-6 equipment.

The Chinese VLS has a hinged hatch above each cell and launches each with no rotation needed. China uses a cold launch technique, as does Russia, which eliminates the complex smoke and flame ducts required by the U.S. Navy’s MK 41 VLS. A PLAN experimental ship has been testing a new VLS that has rectangular hatches similar to the MK 41, and this may be on the next-generation DDG 103 being built in Dalien.

China does not have a large dedicated SAN-6 Top Dome fire control radar near the VLS launchers. The Aegis phased array radar could provide search, and a small antenna near the VLS also could provide X-band acquisition and control links. The smaller guidance and tracking G-/H-band antennas that also have been found on Top Dome radars are located as stand-alone links fore and aft. A small radome is adjacent to fore/aft VLS launcher modules alongside the close-in weapons system, and this is usually covered by canvas in photographs. Several radomes are located fore and aft for satellite communications or non-VLS links or search functions. A very large radome atop the bridge mast may be a Type-364 multipurpose air search, surface search and targeting radar.

The usual PLAN antisubmarine warfare suite would be Italian triple antisubmarine warfare torpedo tubes and 12-barrel Type-75 mortars. Their locations on these new ships are not obvious from initial photographs. Almost certainly a French DUBV-23 bow-mounted sonar dome is under the raked bow. The fully automatic 100-millimeter gun turret on the bow is evolved from the French Creusot-Loire.

A pair of new 30-millimeter seven-barrel close-in weapons systems looks like Dutch Goalkeeper mounts, but the Netherlands claims it did not export the Goalkeeper to China. It appears that China has heavily modified the I-band Goalkeeper antenna, which also appeared on prior Project 052B DDGs. The Chinese designation for this close-in weapons system is Type-730.

A Luda upgrade first installed rectangular YJ-81 SSMs in 1999, and this has continued through the YJ-81s on new DDGs. The large Russian Bandstand radome supports SSMs with a 250-kilometer-range I-band active radar and a 450-kilometer-range multiband passive radar. China’s DDG 107 has six new round-tube-shaped SSM launchers of slightly larger diameter than earlier C-803 SSMs. This indicates a more modern, longer range version of the C-805 (YJ-85) or a newer Russian supersonic SSM.

Taking full advantage of Aegis requires effective datalinks. The concept for the Naval Tactical Data System (NTDS) was outlined in a NATO study in 1955. Three NATO ships were the testbeds for prototype NTDS in 1961, and they operated together for years of development trials. Link 11, also called TADIL-A, was a high frequency (HF) and ultrahigh frequency (UHF) digital encrypted data bus. Later, wideband Link 16 UHF with 10 times the speed was added with antijam frequency hopping included.

Soviet NTDS concepts, such as integrated communication links, first appeared on Kara and Kresta II. The Bell Crown system, which was replaced by the newer Bell Thumb in 1993, was the original Soviet Link 11. The Light Bulb antenna serves the Link-16 Joint Tactical Information Display System (JTIDS) role, which would be replaced by newer AT-2M for Link-16 traffic. Russia has the expected surface-ship-to-aircraft and missile guidance datalinks. Light Bulb and Bandstand were datalinks to the SS-N-22 SSM on PLAN Sovremenny-class ships purchased from Russia.

The first Chinese tactical communication links with characteristics similar to NTDS were observed on the 4,200-ton Luhu-class DDGs in 1991. Initial TAVITAC CDS installations took place on the DDG 105 in 1987, and other Luda models in 1987 could have tried the concept. The PLAN link frequencies of 225 megahertz HF and 400 megahertz UHF are the same frequencies NTDS uses and may be part of the Chinese tactical datalink system designated HN-900.

Western vendors have provided Chinese aircraft with the MIL-STD 1553B data bus, which now has been installed on new 052 DDGs. China has used a Type-W datalink provided by France to non-NATO export customers that is similar to TADIL-A. Sovremenny and Ka-25 helicopters are equipped with the A-346Z secure datalink in addition to HF, very high frequency (VHF) and UHF radios. The newest frigates and DDGs 168, 169 and 170 have the HN-900. The HN-900 probably includes some of these foreign datalink technologies. The Russian Light Bulb datalink is positioned above the DDG 170 helicopter hanger, and Bandstand provides coordinated operations between the Russian navy using Chinese datalinks.

A Soviet 1950-vintage A-band Knife Rest early warning yagi radar antenna is aft. This antenna was not on 052B or the Luhu, but it was on the Luhai and 1990-vintage Luda upgrades and Jiangwei frigates. This seems to hint a weakness in the Aegis, which normally should perform such detection.

The Chinese Aegis DDGs have their own Ka-25 helicopters that can have distant reconnaissance or targeting capabilities and possibly can even carry missiles, although the Aegis concept is to pass target data to the control ship that would launch its weapons. Long-range shore-based fighter aircraft such as the Su-30MKK with its M400 over-the-horizon multispectral reconnaissance pod can pass target data back or can even be vectored to attack with its own long-range 3M80 Moskit missiles by the control ship. The early Su-27SK had an analog voice-encoding link, but the newer Su-30MKK has a TKS-22 datalink. China is negotiating with Russia to equip future Su-30 MK2 aircraft to include the next-generation TSIMSS-1 digital datalink. The DDG 107 would need the appropriate Sukhoi-variant link.

Long-range maritime patrol aircraft (MPA) variants of Tu-154- or Y8-converted An-12 are excellent reconnaissance assets with direct links to the Aegis control ship. Soviet naval MPA used R-837 and R-807 for long-range communications, and the R-802 was the UHF command radio—all of which are on PLAN ships. China has limited ocean reconnaissance satellite capability, but it is known to intercept and utilize data from other nations’ satellites, including those of the United States. Other non-Aegis warships can be good over-the-horizon data sources as long as they have the appropriate datalinks. They could even be shooters if targets are within their missile range. Naturally, the Sovremminy, the Luhu and the Luhai are the best consorts, but other frigates or Luda destroyers also could be used if necessary.

A key element required for an integrated Aegis capability is a shipboard local area network (LAN) and common display consoles shared by a sensors and computer/control station. The U.S. Navy has had several generations of workstations on its Aegis ships.

Soviet ships had primary Second Admiral force command consoles and subordinate Second Captain own-ship warfare area consoles. These were used on large Soviet cruisers such as the Slava and the Kirov prior to the appearance of Sky Watch.

Chinese combat system architecture is less visible, and open literature sources do not directly describe it. A photograph in a working space on the Luhu showed several identical consoles being manned by technicians, and this was not seen on earlier stovepipe sensor and weapon equipment. The consoles do not look like any units seen on Soviet or French products, and they may have been designed and produced by Chinese electronic plants. Possible vendors are the Jiangsu Automation Research Institute, which is known to make rugged naval computers and displays, and Huanwei Technology, which makes Ethernet switches, routers and fiber optic datalinks.

As on the U.S. Aegis ships, such systems can retain many of the original hardware cabinets, but the unique display console might be replaced with a standard shared console including open architecture LAN access. China’s choice of a LAN could be a Russian GOST standard or a Digibus LAN used on French TAVITAC CDS aboard recent PLAN ships. Ethernet or MIL-STD 1553 already are used in avionic and army systems and easily adapt to naval equipment, which supports interoperability of forces. Display console software operating systems likely would be commercial standard versions such as Windows or VX Works that are in production in China.

James C. Bussert is employed at the Naval Surface Warfare Center, Dahlgren, Virginia, where he works on surface-ship antisubmarine fire control systems.


TOPICS: Foreign Affairs; Front Page News; News/Current Events
KEYWORDS: aegis; armsbuildup; china; chinabuildup; chinesemilitary; chinesethreat; dragonsfuryseries; japan; miltech; navy; phasedarray; pla; plan; planbuildup; planmodernization; radar; redchinathreat; taiwan; type052c; worldwariii; wwiii
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China’s new DDG 170 guided missile destroyer features Aegis-type phased array antennas and a ship-to-ship missile control Bandstand radome dominating the bridge. The ship’s numerous foreign weapons and new radomes hint at the complexity of its electronic functions

1 posted on 07/05/2005 8:41:42 AM PDT by sukhoi-30mki
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To: familyop; Oztrich Boy; TigerLikesRooster; ProudVet77; Tommyjo; SampleMan

Ping!!!!!


2 posted on 07/05/2005 8:43:12 AM PDT by sukhoi-30mki
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To: sukhoi-30mki

Looks Like China has a nest of spies deep inside Taiwan to me


3 posted on 07/05/2005 8:46:56 AM PDT by mylife (The roar of the masses could be farts)
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To: sukhoi-30mki
Re #2

I get the impression that they want to churn out massive amount of armament in a next few years. They appear to try to meet preset numerical targets in a hurry.

4 posted on 07/05/2005 8:56:45 AM PDT by TigerLikesRooster
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To: Jeff Head; SLB

Here they come.


5 posted on 07/05/2005 8:58:17 AM PDT by Stonewall Jackson (Our Constitution was made only for a moral and religious people. - John Adams)
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To: sukhoi-30mki

Seems that technological gap is shrinking rather fast.


6 posted on 07/05/2005 9:11:11 AM PDT by DarkWaters
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To: sukhoi-30mki
China's manufacturing capacity and infrastructure, their technology capability, their economic strength as measured in GDP and cash reserves, and their military weapons procurement and deployment are obviously all integrally related...and related in a synergistic sense. Growth in one will fuel growth in the others.

Think for example of the fact that China has maintained a nearly ten percent rate of growth in GDP for some time. Now think of the simple concept of compound interest..applied at a constant rate of ten percent.

Their growth is a nonlinear function...and China is IMHO presently at what engineers call the 'knee of the curve'.
7 posted on 07/05/2005 9:17:30 AM PDT by Dat Mon (will work for clever tagline)
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To: sukhoi-30mki

Much of this probably came from bill clinton and his corrupt donors in the defense industry. I don't know what the lead time is for building an Aegis destroyer, but this stuff must have been stolen some years ago to be appearing fully commissioned on the water now.


8 posted on 07/05/2005 9:18:26 AM PDT by Cicero (Marcus Tullius)
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To: sukhoi-30mki

I wonder how well it's equipped for undersea operations. Can it still see over the horizon, if the horizon is 6000 feet above them?


9 posted on 07/05/2005 9:21:00 AM PDT by kylaka
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To: sukhoi-30mki; Stonewall Jackson; Wiz
Been talking about this for months since they were first spotted building (2 at a time) in late 2003.

THE RISING SEA DRAGON IN ASIA

Documented the continued building after the first two were launched and at least one of them (perhaps both) had been integrated into sertvice.

THE RAPID GROWTH & MODERNIZATION OF THE PLAN

And now have produced a relative pictorial and capability comparison...side by side at the following link which I will publish here on FR this Friday or during the weekend once I get the subs on there.

SIDE BY SIDE COMPARISON OF THE PLAN AND THE USN

10 posted on 07/05/2005 10:18:37 AM PDT by Jeff Head (www.dragonsfuryseries.com)
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To: mylife; Dat Mon; sukhoi-30mki
"Looks Like China has a nest of spies deep inside Taiwan to me"

While they undoubtedly have stolen some of it, the fact of the matter is that a country that churns-out over 200,000 scientists and engineers a year can figure out how to do things, and eventually, do things better.

".... presently at what engineers call the 'knee of the curve'"

Sad to say, but when it comes to capacity and infrastructure, China is operating at y=ex,   whereas the U.S. has chosen to operate at y=Log(x).
11 posted on 07/05/2005 12:29:13 PM PDT by indthkr
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To: kylaka

Seawater's going to wreak havoc on the electornics at that depth.


12 posted on 07/05/2005 12:31:52 PM PDT by CaptRon (Pedecaris alive or Raisuli dead)
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To: DarkWaters
They need to mass produce these things. Their version of the Aegis destroyer has to number nearly 30 before it becomes parity, this true with many of their weapons systems. It is a threshold. What I mean is that we still have time not much, but we have time to step up, lend lease program with Taiwan, and a NATO type organization in the Pacific.
13 posted on 07/05/2005 5:57:36 PM PDT by Kuehn12 (Kuehn12)
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To: Kuehn12
What I mean is that we still have time not much, but we have time to step up, lend lease program with Taiwan, and a NATO type organization in the Pacific.

I agree we still have some time, how much probably depends on their strategy. I was mainly referring to the tech. advances they have at their disposal. They steal it and unfortunately seem to learn very quickly how to implement it. Probably one of the reasons why we haven't seen a huge build up of the ships of various sizes as of yet has to do with learning building techniques, training as many people as possible on just a few projects, learning supply management of resources, gearing up their own steel industry to conceal actual tonnage of material produced, and over all planning. They have taken their time to get it right, they won't rush it beyond the point of alarm yet. Make to much at once and you stir a hornets nest but if you add to your ships a little hear and a little there you can keep things relatively calm. And to top things off build some of the smaller ships in locations that are not so prone to prying eyes of satellites and keep them that way until you need them in a pinch assuming they have the resources to do that.

Second, I am all for bringing back SEATO, it would be a welcomed sight at this point. Better coordination in devising defensive and offensive capabilities, tactics, and strategy. I would also like to see us devote more time to building more subs especially the boomers, and then station them down their and let PLA sweat and the Russians to if they are going to give them any cover in the event of war.
14 posted on 07/05/2005 8:07:35 PM PDT by DarkWaters
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To: sukhoi-30mki
...two domestically designed and built guided missile destroyers that include Aegis-type radars and related technologies

Domestically designed, my hindquarters.

15 posted on 07/05/2005 8:09:56 PM PDT by thoughtomator (The legislative process is like the digestive process, same end product)
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To: DarkWaters

Last I heard, this was already being considered -- Congress has been kicking around building or selling Taiwan 4 Aegis equipped DDG's for a couple of years now. Another thing to take into consideration: these (Chinese Aegis ships) are air-defense ships with a limited ASW capability (to judge from the ASW weapons listed).

If I were Taiwan, I'd start stocking up on submarines. Chinese capabilities seem to have grown in amphibious shipping/heavy sealift and air defense. Perhaps this is a weakness that submarines can exploit.

Secondly, Tawian should also start stocking up on submarine-launched mines in order to deny the approaches to Taiwan, or if necessary, to mine the approaches to PRC ports. The PLAN still has the same basic problem: crossing the straits with a sufficient land force to invade, or a sufficient fleet in order to blockade. Mines would be a quick and cheap solution. Not a total one, but a start.

Finally, if I were Tawian, I'd start getting closer to Japan and India and forging some kind of defense ties. In the event the US Navy cannot get to Taiwan in time, having the Japanese/Indians in the neighborhood might come in quite handy. It also puts two additional, substantial threats on the Chinese flanks in the event of war over Taiwan. I'm sure the PRC has already thought over the threat from the United States, I wonder how they would think if faced by a US/Japan/India alliance, with a nuclear India right next door.

However, this is all bluster on the part of the PRC. I don't believe a war over Taiwan will start anytime soon because the Commies are really more interested in staying in power. If the shooting started over Taiwan it would unleash force within China that cannot easily be controlled if victory does not come quickly. if given a choice between staying in power or taking a massive black eye in a fight for Taiwan, the party can be counted on to protect it's own behind first.


16 posted on 07/05/2005 8:28:16 PM PDT by Wombat101 (Sanitized for YOUR protection...)
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To: thoughtomator

Whether it's entirely homebuilt or not,it's still a considerable achievement for the PRC.I think the phased array radars were developed in collaboration with a Ukranian radio-electronics research facility.


17 posted on 07/05/2005 8:28:46 PM PDT by sukhoi-30mki
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To: Wombat101

Not only is the US rather undecided on selling Aegis equipped ships,the Taiwanese parliament seems lost too.The current proposals are to build the ships in Taiwan & use American systems on it.Anyway,even if Taiwan gets this ships(sold or built) in 3 or 4 years,it will take over an year for them to train officers & build up logistics for those vessels,given that they have never operated anything as big or complex.

The Type-052C's ASW capabilities appear limited,but they are easily the best the PLA-N has fielded ever & the more important point is,submarines are one area where Taiwan is hopelessly weak.Their current force consists of only 2 credible 1980s era Dutch subs & 2 American world war 2 era boats.One would have to be deluded to assume the PLA-N hasn't been tracking those vessels. & It is highly unlikely that they will get new vessels with all potential sub designing nations hedging their bets with the PRC.


18 posted on 07/05/2005 8:34:50 PM PDT by sukhoi-30mki
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To: sukhoi-30mki

I don't disagree with you, except upon one point: that teh PRC will risk political power over Taiwan.

Taiwan is, to quote Orwell, "a stain, a flaw in the pattern that must be wiped out". Part of this is political: no rival system can exist next to Chinese Communism as an example to the Chinese people that there might be another way. In this regard, the ChiComs are no different from the Jihadists vis-a-vis Islam. The second part of that equation is that Taiwan also serves as the 800-pound gorilla in the closet: so long as it exists, it can be presented as hostile to mainland China. In this role, Taiwan is a valuable propaganda tool.

However, we're not talking the China of Mao and the Great Leap Forward. We're talking about the China of Glastnost and the Information Age. The current Chinese economic "miracle" is merely a piece of the plan to keep the PRC in power. They saw what happened to the Soviets when Gorbachev unleashed political reforms that could not be controlled. Rather than have Chinese "vote with their feet" like the East Germans did, the PRC is perfectly willing to compromise and let the people have a scaled-down version of economic freedom, provided they do not get it into their heads that POLITICAL freedom naturally follows.

War over Taiwan (or war in general) threatens this arrangement. In the age of the internet, cell phones and 24/7/365 satellite media, the Chinese could not hide the initial beating they would take in the early stages of tackling Taiwan. Once the Chiense man in the street saw or heard of this, his opinion might seriously change and the PRC would be in quite a bit of trouble. The party would think three times before allowing this to happen.

And I have no doubt they would take a beating. Despite the penchant for quantity in ships, aircraft amd missiles, there is nothing that beats quality. Here the United States and it's allies have the Chinese beat hands down.

Additionally, China is surrounded by potential enemies: Japan, Australia, the United States, teh Philipines, India, South Korea (and even the Vietnamese are getting ansty). The Russians still have a pathologic fear of the Chinese, too. Any Chinese foray into the straits of Taiwan would be under the eyes of hostile airpower, hostile submarine and hostile fleets ready for action.

Forget any scenario where North Korea aid the PRC with sabre rattling over Korea or nukes. Moscow would not stand still for it at all.


19 posted on 07/05/2005 8:50:53 PM PDT by Wombat101 (Sanitized for YOUR protection...)
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To: sukhoi-30mki

....Does it even work?


20 posted on 07/05/2005 9:23:35 PM PDT by adam_az (It's the border, stupid!)
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