[Erasmus]

There is one big advantage to the gun device: It's simple.

There are two significant disadvantages to the gun device:

1. You need more fissile material, so it takes longer to make (starting from the day you get your enrichment plant running).

2. It's got to be big. Too big and heavy for a portable device, and very inconvenient for a clandestine one.

Of course, the above considerations apply for an actual fission bomb, not a 'dirty' scatter-radioactivity-with-TNT one.

[ZeitgeistSurfer]

While everyone is looking at Iraq, Iran is on the verge of bringing its massive reactor at Bushehr on-line. This is the first step in the production of serious nuclear weapons. Iran is the greatest terrorist threat to the West, not Iraq. It is the country that has an al-Queda training camp. My sincere hope is that after GWB brings Saddam and his regime down, he turns his attention immediately to Iran

[null and void]

2. It's got to be big. Too big and heavy for a portable device, and very inconvenient for a clandestine one.

Too big for an ICBM. Several would fit in a shipping container...