[Publius]

You're right about another major attack on the homeland being necessary to trigger World War II Rules, but a declaration of war from the other party is not necessary.

If Iran were to use a Revolutionary Guards cell or a Hezbollah cell against us, they would never admit to it, much less declare war on us.

[KurtZ]

It would take an open declaration because nobody would believe Bush. Even if you showed John Kerry a video of the Ayatollah lighting the fuse on a big round object that said NUCLEAR BOMB and laughing Willy E. Coyote style, he would claim its a Bush conspiracy.

[rmlew]

If Hib'ullah were to attack us, we would have a very good reason to declare war on Iran.
Greater Azerbaijan here we come.

[joseph20]

If Iran were to use a Revolutionary Guards cell or a Hezbollah cell against us, they would never admit to it, much less declare war on us.

This brings to my mind what I consider to be the ultimate question. What is your proposal in the hypothetical circumstance that you wake up tomorrow morning to news that a nuclear device has been exploded in New York City and that a million or more citizens have been killed? And also that there is no way of knowing who did it?