The larger picture here is that a North Korea with nuclear weapons adds to the larger proliferation risk.

It is manifestly in the interest of the United States to deal with the very real threat that climate change poses. And that's why President Obama has worked so hard to reduce our own emissions and to lead internationally in forging the Paris climate agreement.

We are safer if there are not nuclear arsenals around the planet that can be utilized, stolen, sold to terrorists and others who would do harm.

Americans understand that our security is enhanced when the United States is trusted and respected in the world.

What we have done is when the threat has been directed at the United States, i.e., the terrorist threat from ISIL or Al-Qaeda in Syria, is to go after them.

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

I read a ton of paper every day. I read the newspapers, I read my intelligence materials, I read all the briefing materials. I read the newspaper in hard copy.