General Stanley McChrystal resigned his job as top U.S. commander in Afghanistan after disparaging remarks he made about President Obama, among others, were published in Rolling Stone magazine.

Does military culture always involve speaking out about your superiors, or was this just an unusual one-off at a very high level?

It's been seven years since the U.S.-led "coalition of the willing" invaded Iraq. We talk with two soldiers who fought in Iraq to find out what has changed on the ground since the war began.