Barack Obama: “Recognizing the importance of a national layered defense against the loss or theft of nuclear and other radioactive…”

They're meant to remind us of who we can be, to remind us of what's possible, so we can forge ahead.

Now the ball’s in your court, Iowa.

And there’s no reason to suggest that we can’t get through this one either.

I am very happy to see a ceasefire. And I’m hopeful that it holds.