America has not led but fled on the issue of global warming.

We need a leader who has a sense of balance, an understanding of the ebb and flow of history and a sense of our country's unique place in it. This is a foreign policy debate, and you cannot conduct foreign policy without a sense of what we are fighting for. And any President who can reduce the conduct of this country's affairs to a morning's attack by a bunch of demented fascists does not, in my view, understand what this great nation is all about.

We are a nation of laws and liberties, not of a knock in the night. So it is time to end the era of John Ashcroft. That starts with replacing the Patriot Act with a new law that protects our people and our liberties at the same time.

Those localized efforts take a long time and they don't deal with the larger issue of ISIL and the question of what you're going to do to really have a solution here. We have to save Syria.

What remains unchanged is the principle, which is that we do not launch wars without overwelming reasons, and overwhelming alliances, and without overwhelming force.

I think that all of the cyber attacks that are taking place, but particularly this - the Russian one, had a profound impact on the American system, on our political process, on our - it invaded the space of our election. The releasing on a regular basis of one party's stolen emails had an impact, and I think that other things also had an impact.

Not to wax nostalgic about the 1970s, but back then people got upset when they saw injustice. They got tired of seeing our air, land and water polluted. They were shocked when the Cuyahoga River in Ohio was polluted so badly it caught fire. And on one great day 20 million Americans marched all across this land. Politicians had no choice but to take notice.