Well, as you said, he needs to fix "fizzle" problem, and give a really convincing demo, at least to Iranians. So Chia Head attached condition U.S. is unlikely to accept. If U.S. caves, it is great. Iranians should wait longer, but since N. Korea forced U.S. to cave, U.S. position is weakened, which is also a good news to Iranians. It is worth a longer wait.
Yup, and in the mean time, those reactors are still pumping out fissile material with which to make more.
It is worth a longer wait.
The longer we wait, the more bombs the more needles there will be in the global haystack.