From his speech:

But understand, the attacks of the last two weeks are not simply an assault on America.  They are also an assault on the very ideals upon which the United Nations was founded — the notion that people can resolve their differences peacefully; that diplomacy can take the place of war; that in an interdependent world, all of us have a stake in working towards greater opportunity and security for our citizens.

Which is juxtaposed by this from the Stanford/NYU report out today:

Following nine months of intensive research–including two investigations in Pakistan,more than 130 interviews with victims, witnesses, and experts, and review of thousands of pages of documentation and media reporting–this report presents evidence of the damaging and counterproductive effects of current US drone strike policies. Based on extensive interviews with Pakistanis living in the regions directly affected, as well as humanitarian and medical workers, this report provides new and firsthand testimony about the negative impacts US policies are having on the civilians living under drones.