Regime change has been an American policy under the Clinton administration, and it is the current policy. I support the policy. But regime change in and of itself is not sufficient justification for going to war--particularly unilaterally--unless regime change is the only way to disarm Iraq of the weapons of mass destruction pursuant to the United Nations resolution.

It's one thing to be certain, but you can be certain and you can be wrong.

What remains unchanged is the principle, which is that we do not launch wars without overwelming reasons, and overwhelming alliances, and without overwhelming force.

As I have said for two years now, when Osama Bin Laden and al-Qaeda were cornered in the mountains of Tora Bora, it was wrong to outsource the job of capturing them to Afghan warlords who a week earlier were fighting against us.

I saw courage both in the Vietnam War and in the struggle to stop it. I learned that patriotism includes protest, not just military service.

From the moment I take office, I will stand up to the special interests and stand with hardworking families so that we can give America back its future and its ideals.

It's likely that people will say we're all interested in destroying - ISIL is a threat to everybody. There isn't one country in the region that doesn't despise what ISIL stands for and is doing and that doesn't want to eliminate them.