It's important to understand the origins of ISIS were in the chaos of Iraq and Libya, and the origins of Al Qaeda were in Afghanistan.

In an election like this one [in 2016], not only are voters dissatisfied, but where the foundations of our economy, our democracy, our ecosystem, and international war and peace are really crumbling and are really at grave risk for failing in many ways, we need desperately to have an honest public conversation about both the track record of where we've been, what are the critical problems we are facing and what it will take to solve them.

The two majority candidates right now, the Democratic and Republican candidates,[Donald] Trump and [Hillary] Clinton, are the most disliked and untrusted Presidential candidates in our history with more than majority disapproval.

The states have the authority to change this voting system for president, right now, in fact, if they wanted, on an emergency basis, they could adopt a ranked-choice system, which simply allows you to go to the poll, and rather than rolling your dice and deciding whether to vote your values or your fears, you get to rank your choices, knowing that if your first choice loses your vote is automatically assigned to your second choice. It's kind of a no-brainer system. It works very well.

I think we have a very critical role to play, within the spectrum of international law and human rights.

If people fear that they have to choose between their job or fixing the climate, they will always protect their job. Because that's how they live to see tomorrow.

Right now we have a $600-billion or so Defense Department budget, but when you add in, for example, a trillion-dollar nuclear weapons program over the next decade or two, it adds significantly to it. So it's somewhere around $600 billion. We call for approximately cutting that in half and instead putting those dollars into true security here at home.