With Iran defying the UN and America revealing there plans about what they would do if war broke out then I think its fairly safe to say that war is inevitable.
How are America going to fight two wars at a time? there struggling as it is with Iraq nevermind throwing Iran into it all.
A couple of things...
First of a military draft is extremely unlikely. If I'm not mistaken the President can request one to be enstated, however, it's completely up to congress. As congress sits right now....no draft.
Secord, Iran is a fully organized, well trained and modern standing army. Regardless of any nuclear abilities they MIGHT have, their army alone is far more potent than any military we have faced in a LONG time. Its not strategically logical to attack as majority unified modern militarized county like Iran.Its much safer to strike countries that can't fight back, like Iraq. you say they cant fight back, but they are getting stronger as time goes on, 6 british helicopters have been shot down in the past month by rocket propelled grenades, we didnt have this problem at the beginnig of the war.
Despite an increase in attacks on our forces it is still absolutely NOTHING compared to what Iran would show us. Iraq is split into far too many militia groups, religious zealots groups, etc... to actually physically FORCE troops to withdraw. As terrible as it is to loss our guys over there it's not a war in the sense that Iran would be a war.actually iraq's army was no slouch either at the start of the war either... but a direct invasion would only occur after prolonged airstrikes
Airstrikes are not an option since Iran has air defense all over their country...they also have a huge amount of fighter jets.......the US would most likley loose to Iranif it came it it ( which i doubt anyway), obviously the first targets would be iran's air defense systems... i doubt iran has much air defense vs. a cruise missile.