I read all of Ayn Rand's novels when I was 17.

This flirtation with isolationism in the Republican party is over. It's giving way to a more muscular foreign policy than I've been advocating. But I'm also advocating building up others. Build a small schoolhouse in Afghanistan to help a poor young girl have a say about her children will destroy the ideology more than a bomb.

We shouldn't have a program where we just say that we're going to take care of the world's refugees. Nobody in the Middle East is doing anything. Saudi Arabia, Qatar, Kuwait - all the Gulf nations are doing nothing.

For example, the use of chemical weapons [in Syria]- some on the Democrat side have said well, this encourages the North Koreans to use chemical weapons against our troops.

I can tell you who's planning terroris attacks. The leaders of ISIL. And I can tell you where they're at. They're in Raqqa, Syria. So for God's sakes, Mr. President Barack Obama , change your strategy. Come up with a ground force to go in and destroy the caliphate before we get hit here at home. That would be my advice to you.

The idea of foreign policy realism, I think, fits more neatly with President Trump. And with John McCain, the neoconservative label of let's make the world safe for democracy and we're going to topple every regime hasn't worked.

I also think regime change in Syria is a bad idea. And that's an ongoing question. It's one of the things I like about Donald Trump, one of the reasons I endorsed him is he thinks regime change is a mistake. But John Bolton thinks completely the opposite. They are diametric opposites.