Since the civil war in Laos was resumed in earnest in 1963, American participation has been veiled in secrecy.

Why did the people think [Vietnam war] was fundamentally wrong and immoral? The guys who ran the polls, John E. Rielly, a professor at the University of Chicago, a liberal professor, he said what that means is that people thought too many Americans had being killed. Another possibility is they didn't like the fact that we were carrying out the worst crime since the Second World War. But that's so inconceivable that wasn't even offered as a possible reason.

Science talks about very simple things, and asks hard questions about them. As soon as things become too complex, science can't deal with them... But it's a complicated matter: Science studies what's at the edge of understanding, and what's at the edge of understanding is usually fairly simple. And it rarely reaches human affairs. Human affairs are way too complicated.

Those who had demanded no more than an end to the bombing of North Vietnam and a commitment to negotiations saw their demands being realized, and lapsed into silence.

I agree with Bill Clinton that US forces should not be sent to Haiti, but not for his reasons.

I think the foreign policy is really not Donald Trump administration concern. Like the Syria strike. I mean, it meant almost nothing. They hit an empty air base. Within a day, it was functioning again. Planes were flying off it. It was for a domestic show, you know - show what a tough guy I am; I'm not Barack Obama.

When people know we are ready to use nuclear weapons, they're going to back off if we do something aggressive. So basically, nuclear weapons are always being used.