What we do have to do, is listen to what Donald Trump's been saying about our military. He's called it a disaster. He says our military can't win anymore. That's a direct insult to every single man and woman who's wearing the uniform today.

Donald Trump has no credibility to criticize me or my record or anything that I have done. If he had spent a minute in the deserts of Afghanistan or in the deserts of Iraq, I might listen to what he has to say.

The best thing I ever did was give my family everything I could.

There is a direct line relationship between what happened in Afghanistan in the work up to 11 September 2001 and what we're doing in Afghanistan today.

The Russians haven't helped us at all in the fight against ISIS. When you total up the numbers of sorties that have been going into Syria, aircraft attacks, if you will, going into Syria, when the Russians said they were going to assist, we got a very small number of Russian sorties.

I seek as much as I can to mitigate risk.

Protecting Afghan civilians is the cornerstone of our mission.