Barack Obama: “Make no mistake, as long as nuclear weapons exist, the United States will maintain a safe, secure, and effective arsenal…”

A drift towards extremism was "not inevitable

If I had a blame pie for why politics is so polarised and why we're seeing a rise of populism in many places, it's because of that information that is going into our brains every day.

I'm going to go to Michigan to campaign for Abdul El-Sayed.

And I will fight for that, even if I don’t always think it’s going to win.