General politics thread

Not long ago, I asked Obama to describe his thinking on that day. He listed the practical worries that had preoccupied him. “We had UN inspectors on the ground who were completing their work, and we could not risk taking a shot while they were there. A second major factor was the failure of Cameron to obtain the consent of his parliament.”

The third, and most important, factor, he told me, was “our assessment that while we could inflict some damage on Assad, we could not, through a missile strike, eliminate the chemical weapons themselves, and what I would then face was the prospect of Assad having survived the strike and claiming he had successfully defied the United States, that the United States had acted unlawfully in the absence of a UN mandate, and that that would have potentially strengthened his hand rather than weakened it.”

The fourth factor, he said, was of deeper philosophical importance. “This falls in the category of something that I had been brooding on for some time,” he said. “I had come into office with the strong belief that the scope of executive power in national-security issues is very broad, but not limitless.”