Bombs

Does anyone recall at time when we used to be able to distinguish between atomic (i.e. fission) bombs and "nuclear" (i.e. fusion) weapons? I have no special knowledge here, but I find it hard to believe that Iraq/Iran/North Korea are on the verge of producing fusion-based weapons, as it took the US and USSR an extra 15 years or more to figure that out even after the A-bomb dealio. For that matter, I think Pakistan and India are still working with atomic weapons. I think the distinction is as important as, say, the difference between a 5 megaton and 40 megaton explosion.

By the way, has anyone heard from Lt. Mikey recently?