You could be in the United Nations office all night every night and still feel like you were not making a sufficient dent in the world's problems. I think the key is prioritization. But every job presents the tyranny of the inbox, of allowing the urgent to crowd out the important. So we have to have our lodestars.

International institutions are composed of governments. Governments control their own military forces and police.

It is easy to get used to the morning news, habituated. But don't. The morning news is yours to alter.

First, recognize the mistake. The main thing is taking responsibility and being authentic.

I think we do have an interest in combating states that try to cross borders and steal parts of other people's country.

Another longstanding foreign policy flaw is the degree to which special interests dictate the way in which the "national interest" as a whole is defined and pursued.... America's important historic relationship with Israel has often led foreign policy decision-makers to defer reflexively to Israeli security assessments, and to replicate Israeli tactics, which, as the war in Lebanon last summer demonstrated, can turn out to be counter-productive.

I think that the only time we will really know what then-President Trump is going to do about the set of challenges that confront him is after he has sat down with his advisers as the commander in chief, when he's looking at the threats and the intelligence from the standpoint of being the number one decider, when he's hearing from his secretary of defense, his chairman, who was the same chairman President Obama had, Chairman Joe Dunford, who is an outstanding public servant, who has led our anti-ISIL effort, on which we're making great progress.