Nuclear Iran

A simple question-- if the Bush administration and the western world wasn't always making threatening noises about Iran, I wonder how serious Iran would be about pursuing a nuclear weapon.

It seems to me all Bush's and Blair's and the European's bluster about Iran is having the effect of radicalizing Iran more than would otherwise be the case.

Then you have to wonder: if this the desire of the Bush administration and the western world? A radicalized Iran?

Four more questions:

1) who poses more of a threat to the other country? The US to Iran or Iran to US?

2) what country has more of an ambition to remake the world in its image, US or Iran?

3) what country has the capability to remake the world in its image, US or Iran?

4) there is a worst-case scenario that Iran makes nuclear bombs and hands them to terrorists that use them to attack the US-- but how technically realistic is this scenario? Moreover, doesn't it make sense for the US to ease tensions with Iran to lessen the chance of hostilities?