When I was in Vietnam I learned a lot about the promises that soldiers make to each other. The Marines have a promise to never leave behind their dead. In this country, as citizen soldiers, we need to make the commitment to each other that we will never leave our veterans behind.

The Russians need to understand that you cannot have peace [in Syria] unless you resolve the question of Sunni buy-in.

As I have said for two years now, when Osama Bin Laden and al-Qaeda were cornered in the mountains of Tora Bora, it was wrong to outsource the job of capturing them to Afghan warlords who a week earlier were fighting against us.

What Donald Trump is doing is serving the polluters and serving a narrow group of ideological interests. That's not leadership. That's abdication of responsibility, and this step does not make America first. It makes America last.

If the tea party folks would go out there and get angry because they think their taxes are too high, for God's sake, a lot of citizens ought to get angry about the fact that they're being killed and our planet's being injured by what's happening on a daily basis by the way we provide our power and our fuel and the old practices that we have. That's something worth getting angry about.

We can't change minds without knowing what's in them.

How do you ask a man to be the last man to die in Vietnam? How do you ask a man to be the last man to die for a mistake?