I told my father I had to try political science for a year. He thought I was throwing my life away.

For the private sector to flourish, special privilege must give way to equal opportunity and equal risk for all.

We did not go to war in Afghanistan or in Iraq to, quote, 'impose democracy.' We went to war in both places because we saw those regimes as a threat to the United States.

Jobs are a priority for every country. Doing more to improve regulation and help entrepreneurs is the key to creating jobs - and more growth.

Iraq has no history of ethnic conflict.

One of the things that ultimately led me to leave mathematics and go into political science was thinking I could prevent nuclear war.

After a regime is removed, however, it is dangerous to leave a security vacuum.