Legislation that would withhold funding for the United Nations is fundamentally flawed in concept and practice, sets us back, is self-defeating, and doesn't work.

I spend every day up at the United Nations where I have to interact with 192 other countries. I know how well the United States is viewed.

I do leisure reading but I don't get to do it like, at one in the morning. When I getting up at six in the morning, so I do most of my leisure reading on vacation and on airplanes and that sort of stuff.

For the United States to recommit itself to the obligation that we undertook in the Nuclear Non-Proliferation Treaty that many other states undertook, which was to work towards disarmament and the eventual elimination of nuclear weapons, is something that manifestly serves our national security interests.

The problem is, Hamas is using force to try to extort progress on its political objectives.

I think it's very, very important that in foreign policy and national security decision making, as in any other realm, that there be a range of diversity that reflects the full complexity of America. We should draw on those experiences to inform our decision making.

Iran's economy is now shrinking by 1 percent a year. Its oil production is down 40 percent.