Not so fast, SB. Remember when George W Bush invaded Iraq and "replaced" the regime? All hell broke loose in the Middle East. Both Iraq and the rest of the Middle East were much better before the US invasion.

Same for Lybia: During the (very bad) regime of Khadafi, at least there was order in the country. Now the whole country is a mess, much worse than before the US invasion.

Do you think that Afghanistan is better now than it was before the US invasion after 9/11?

The US invaded Vietnam and tried to change regimes there.... What do you think of the result?