It's one of the reasons [Vladimir Putin invitation to U.S] why 50 national security officials who served in Republican information - in administrations have said that Donald [Trump] is unfit to be the commander- in-chief. It's comments like that that really worry people who understand the threats that we face.

'Smart power' is the use of American power in ways that would help prevent and resolve conflict - not just send our military in.

It is absolutely without contradiction that when women are encouraged to participate in the formal economies of their societies, the economy grows.

We ought to be doing all we can to make it possible for every child to fulfill his or her God-given potential.

Americans have fought their way back from tough economic times, but the deck is still stacked in favor of those at the top.

A man who can be provoked by a tweet should not have his fingers anywhere near the nuclear codes.

At least I have a plan to fight ISIS.