South Vietnam was invaded by the North and requested our help. Iraq had invaded an ally, Kuwait, and then after that war, had violated the terms of the truce repeatedly, including an assassination attempt on a former president. We never went to war with Guatemala or Honduras.
That's what Syria is trying to pull of. Assad is afraid that if he is attacked by NATO, he will end up like Qaddafi. His only hope in that case would be to try to turn his personal fight for survival into a jihad against Israel, counting on the culturally ingrained antisemitism of the Arab/Muslim world and the knee-jerk anti-Americanism of the western leftist intelligentsia to create support. Fortunately for him, Obama would never attack an ally of Iran.










