Our nation has both an obligation and self-interest in facing head-on the serious environmental, economic and national security threat posed by global warming.

I think we also ought to prepare the American public, by way of informing them, that Saddam Hussein has these weapons, continues to attempt to improve their capability, and would not be reluctant to export them to other countries. So he presents a clear and present danger.

The day that the leadership of the military comes to me and says, "Senator, we ought to change the policy," then I think we ought to consider seriously changing it.

War is awful. Nothing, not the valor with which it is fought nor the nobility of the cause it serves, can glorify war. War is wretched beyond description and only a fool or a fraud could sentimentalize its cruel reality. Whatever is won in war, it is loss the veteran remembers.

Torture gives you reliable and unreliable information. That's the reason why most people in the world don't do it. So this idea that you have to torture people in order to protect national security is a false argument, and I reject it.

[Hillary Clinton] was saying, "We never going to do anything in Iraq, we're not going to do anything in Syria." Enemies, do whatever you want. Continue the largest humanitarian crisis, 7 million people displaced refugees. Do all this. We're not going to do anything. That is the type of stuff that is been happening for the past 7 1/2 years under President [Barack] Obama.

Under my plan, 85 percent of America will pay no tax or have a flat tax at our lowest rate of 15 percent.