Chuck Hagel: “Climate change does not directly cause conflict, but it can significantly add to the challenges of global instability…”

This is so unpredictable. And we've never seen anything quite like this in our lifetime, so there is no playbook here.

There's a perception that it is the military's responsibility to fix the problem. Problems are not fixed by militaries.

It is a measurement. But I don't think it is the measurement. I mean, I was in a war with a lot of body counts every day. We lost everyone.

When the National Guard opened up on students and killed students, partly because they weren't trained, they panicked.