U.S airstrike in Pakistan

Its amazingly arrogant that the U.S. would have an air strike in a supposedly allied country without keeping them informed. Thought everybody kept saying that Pakistan was an ally was helping the US to track down the bad guys. Of course, I don't know if in fact the Pakistani military was informed and kept quiet about it. Its nasty. And nothing came of it. In hindsight it is a failure, with no redeeming quality.