It was interesting watching the Afghanistan war review deliberations, this three-month process where Barack Obama did the most thorough foreign policy review ever by a modern American president. Compare that to Libya. For a month he said we weren't going to do anything, then suddenly changed his mind and did it on the fly. My view is that it's not how long or quick you take to make a decision, it's whether you make the right one.

The fact is, psychiatric help is not widely available to CIA agents - and as in the military, there is a stigma attached to admitting post-traumatic stress.

Afghanistan would have been difficult enough without Iraq. Iraq made it impossible. The argument that had we just focused on Afghanistan we'd now be okay is persuasive, but it omits the fact that we weren't supposed to get involved in nation-building in Afghanistan.In my new book, I open with a quote from Donald Rumsfeld. In October 2001, he said of Afghanistan: "It's not a quagmire." Ten years later there are 150,000 Western troops there.

If you polled the military in Afghanistan as to how many think we should be there or not, the numbers would probably be similar to what the U.S. population believes. That's not because they're watching the news. But, hey, they are out there risking their lives. No one likes to be criticized and it really sucks to be criticized when you're risking your life.

As the wealthiest country with all the blessings that we have, do we have an obligation to help the outside world? I think we do, as we have an obligation to help everyone within our own borders. The problem is that this automatically gets translated into: "What's the point of having a huge military if we can't bomb people?" That's the problem that I have. Our foreign policy is essentially our defense policy.

By the time of Andi Parhamovich death, I had already grown skeptical of the Iraq war. What her death made me realize was what the actual price was. Going through that kind of loss and seeing how devastating it was on her family and friends made me decide that I was only going to write about things that I really believed in. I'm not going to compromise on that.

Gore Vidal, Glenn Greenwald, Noam Chomsky, talk about how the U.S. became a national security state after World War II. Essentially there's this bipartisan foreign policy elite who've been calling the shots for the last few decades and they're clearly still in control regardless of how clownish or absurd they demonstrate themselves to be. There's no shaking their orthodoxy. To me it was the most depressing thing, these full-scale military interventions firsthand for a number of years, seeing how quickly we can get involved in another war with very little debate.