We need a new approach to national security - a bold, progressive internationalism that stands in stark contrast to the too often belligerent and myopic unilateralism of the Bush Administration.

People talk about [Bashar] Assad running Syria. He doesn't control his own country. He's down to about 20, 25 percent of the country. What is this fiction that he is somehow the only person who can save Syria? There's - with Assad there, there is no Syria. So that's what the Iranians and the Russians need to really begin to focus in on.

And if [Vladimir Putin] does fight ISIL alone, how does it work out for Russia to have sided with Assad, sided with Iran, sided with Hizballah, when they're trying to reach out to the rest of the Sunni world in the region? That's not a good equation for Russia.

The oceans themselves are threatened and life itself, therefore, and the planet is threatened because of it.

If the choice is one-state, Israel can either be Jewish or Democratic. It cannot be both.

As the saying goes, I have big heels to fill.

Politics has always been the art of the possible. Today it's too often the art of the probable - tinkering around the edges without any greater vision, without a sense of optimism and imagination.