You cannot allow any of your people to avoid the brutal facts. If they start living in a dream world, it's going to be bad.

We face now an era where we're going to be fighting the terrorist threat. I mean, that's simply a reality we are going to have to address that one.

There are some people who think you have to hate them in order to shoot them. I don't think you do. It's just business.

I don't see lethality as the problem. I mean, the lethality of US forces is quite remarkable.

PowerPoint makes us stupid.

Yousef Aid Ahmed has memorized the places where his four brothers' bodies laid after they were killed by US marines, he said. The family recounts that November day in 2005 and says it was a massacre of the brothers, along with 20 other people, following a roadside bomb in Haditha.

I can't imagine that I would be asked that by the president-elect [Donald Trump], or then-president [Barack Obama]. But it's - I'm very clear. I voted for the change that put the Army Field Manual in place as a member of Congress. I understand that law very, very quickly and am also deeply aware that any changes to that will come through Congress and the president.