Barak Obama, Democrat Presidential contender recently stated that he'd be willing to attack into Pakistan if there were high value targets that Pakistan refused to take out. Considering Pakistan is an ally, I'm not sure threatening them with invasion / bombing would be considered good international relations. Pakistan doesn't seem to like the idea. These guys sure don't.
Way to go, Barak. Why don't you "flush a Koran down the toilet" while you're at it.