Why do you believe Kerry or Hillary would be more likely to use nukes than a Republican?
Kerry, if elected would pull back in Iraq and turn it all over to the UN which would be ineffective. AQ and the Ba'athists would soon run the place and the Government in Pakistan would fall to the Islalmists there. Arabia probably would not last very long either. The Iranian government would gain tremendously and the Islamists would increase and spread exponentially. We would take some serious 911 type hits, in part because the domestic defenses would be negated by Kerry. He would react with bluster to the first hit and probably the second. If they are bad enough, say a nuke in a freighter in Boston Harbor or Hampton Roads, the third will get reaction. By that time the people pressure will be tremendous and the options will be much more limited. He will use nukes. Hillary will respond that way, too. Bush or another Republican might use nukes but it will be truly in extremis if all other methods have failed and we are taking heavy damage to the homeland. The problem with the Democrats is that they will let extremis come upon us without doing what is necessary to avoid such a situation.