Barack Obama: “We lead best when we combine military power with strong diplomacy; when we leverage our power with coalition building.”

A drift towards extremism was "not inevitable

I think when we act on that basis, it doesn't always work out, but over time things do get better.

Because if this becomes the new normal, there’s no reason to believe it will stop with her — or that future presidents, in either party, won’t do the same.

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.