I find it funny that we're arguing over facts from the 1940s. Did the US wait before getting involved in World War II? Yes, absolutely. But there was a reason for it. First of all, the country was divided over which side to even join. The US was making money selling arms (only to the Allies I believe, but because they weren't involved in the war, they were able to sell arms without getting attack). Canada, on the other hand, being more closely aligned with England than the US is, got involved in the war when England did. The US needed to be attacked before entering the war.
Should the US take credit for winning the war? Yes, we certainly have a right to. Had we not gotten involved in the war, the Germans likely would have won the war. England was being bombed into the stone age. France was already occupied by the Germans. The Soviets didn't care about England all they cared about was not getting occupied themselves. Had the US not been involved in World War II, the Nazis might still be in power today.
But either way, that was then, and this is now. Should other countries feel obligated to help the US against Iraq? No, if the US is the strongest country in the world, then there is no reason why we would need help to beat Iraq in a war. Should we go to war with Iraq? No, but that's another thread so I won't go further into it. I don't harbor any ill feelings towards the countries that don't want to help us.
"You can dance and you can prance, but when it comes to relationships keep it in your pants. Oh, its true." Kurt Angle and my year book quote