I supported Israel 100 percent as a senator for 28 years and I've supported it 100 percent as Secretary of State.

You might not see climate change as an immediate threat to your job, your community, or your families," Kerry said. "But let me tell you, it is." He continued, "climate change is directly related to the potential of greater conflict and greater instability. I'm telling you that there are people in parts of the world - in Africa today, they fight each other over water. They kill each over it. And if glaciers are melting and there's less water available and more people, that is a challenge we have to face.

I know something about aircraft carriers for real.

America must always be the world's paramount military power. But we can magnify our power through alliances.

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.

I do think that it's really important for leaders of countries to be very clear and careful in the statements they make because their words are weighed extremely carefully by other countries, and you have to create a continuity of seriousness and of credibility in order to be able to be taken seriously and get things done.

A fundamental premise of politics is we can make this work if people just never figure it out.