1- Well if we take the iranian reactors out and if they have no uranium enrichment facilities, we could prevent them from a bomb by taking the major component of their bomb making potential out, without which they can never make a bomb.
2- Pakistan is a threat that needs to be addressed. In my opinion musharraf isn't better than anyone. He is co-operating with us, because he doesn't have a choice.
Even then his co-operation has been minimal just to avoid sanctions or a US led war. He hasn't addressed either the nuclear or terror issue decisively.
We need to look beyond musharraf at the possibility of those nukes falling into wrong hands when we think of pakistan.
paki nukes are no good unless they can get them airborne. We can get them on the ground with our superior airpower by grounding their airforce and wrecking their communications. The indian army can then break pakistan up and russia could contribute troops for peace keeping.
3- As for saudi arabia, we have a shiite iran. we have a shiite majority iraq. We don't need another powerful shiite state in the region. We don't need to be confronted with 3 irans in the region. saudi arabia should be broken up into numerous small sheikdoms the size of qatar if possible, we don't need to carve a powerful shiite enclave out of it.