We have actually experienced in recent months a dramatic demonstration of an unprecedented intelligence failure, perhaps the most significant intelligence failure in the history of the United States.

The potential for regional conflict in the absence of an internationally active America is real.

The Chinese are really good at diplomacy - and even at making their interlocutors feel very uncomfortable.

I'm all in favour of grand important speeches, but the president then has to link his sermons to a strategy.

Elevating the status of women is our best path to peace, justice, and prosperity on a global scale.

Generally, the view that I've had on Twitter is if you're on Twitter, you're in, like, the meme - you're in meme war land. If you're on Twitter, you're in the arena. And so, essentially, if you attack me, it is therefore OK for me to attack back.

I think you can go back in history and look at what the effect in Asia and the world was of a divided, fractured China from, you know, the opium wars through the Chinese civil war, and I don't think it was pretty for Asia or the world.

I have known war as few men now living know it. It's very destructiveness on both friend and foe has rendered it useless as a means of settling international disputes.