The Book “One Second After” immediately came to mind.
One would think North Korea may also have simular plans.
I did a quick metasearch and read-up, and here is what I found.
In 2008 the Director of the DIA reported to Congress that the North Koreans had got their hands on Soviet discard technology and were producing copies/improved copies of the SS-N-6 sea-launched ballistic missile, which the Norks had redeveloped as a land-based IRBM, US codename "Musudan". This missile had a range of about 1200-1500 nm in Soviet service, and lofted a single warhead rated at 1.75 megatons. It was a MAD weapon deployed on "Yankee"-class SSBN's; this was the weapon system I was personally tasked against when I was in the Nav 40 years ago.
In 2008 the Norks apparently made available a number of these revenant Soviet vehicles to the Iranians, who announced (and Reuters reported) in 2009 a successful test of the "Sejil" IRBM, which appears to be the "Musudan". This weapon system is distinct from the homegrown "Shahab"-series missiles the Iranians had been developing, the (then) latest of which had been developed to the IRBM/1000-mile class.
These systems would appear to be what Ahmadinejad and Chavez appear to be preparing to deploy in Venezuela.
Right about now would be a good time for USG to move definitively, and with exterminative thoroughness, against the Iranian nuclear-weapons program.