Clearly, Russia has lied to the world about what's going on in Ukraine. They have clearly violated the cease-fire agreements.

Winning in Afghanistan is having a country that is stable enough to ensure that there is no safe haven for Al Qaida or for a militant Taliban that welcomes Al Qaida. That's really the measure of success for the United States.

People elected Donald Trump because he acts decisively. He fired James Comey. He didn't fire the entire FBI. If there's something there, the FBI is going to continue to investigate it.

The United States has to be a leader in the world, because the problem is: If we are not leading, nobody else will.

I think it's extremely important that the president Donald Trump himself indicate that he too wants to discover the full truth behind what the Russians did to elections 2016.

After every major conflict - World War I, World War II, Korea, Vietnam, the fall of the Soviet Union - what happened was that we ultimately hollowed out the force, largely by doing deep across-the-board cuts.

We either believe in the dignity of the individual, the rule of law, and the prohibition of cruel and unusual punishment, or we don't. There is no middle ground.