In a few years, you should be able to plug your American-made plug-in hybrid into the outlet in your garage, so that you never use a drop of gas on your daily commute. This won't happen overnight, but I promise you, it is closer than you think.

America is the one that leads the effort to make sure the freedom of navigation in the South China Sea is protected.

I think, all in all, the Obama administration and what President Obama has focused on has lived up to our need to protect American interests, to live our values and assert our values, and to stand up for future generations.

Sunni are the majority of the [Syria], 60 to 65 percent. They've been ruled by [Bashar] Assad, who represents a minority Alawite element, which is about 12, 13 percent. And because of the choices Assad made, it's very difficult to see how you resolve this without buy-in from the Sunni world.

When President Bush sees America, he sees only a military superpower. I see a moral and idealistic beacon. Mr. Bush may talk about democracy all he wants, but it is not democracy to wilfully disdain and heap scorn on world opinion. We do not command moral leadership by starting pre-emptive wars.

The agreement is fundamentally that we want to try to resolve this. The agreement is that ISIL is a threat to everybody, and we need to come together to find a way to fight ISIL. The agreement is that we want to save Syria, keep it unified, keep it secular. So surely in those very fundamental principles on which we could agree.

I voted to threaten the use of force to make Saddam Hussein comply with the resolutions of the United Nations.