Barack Obama: “We need to sustain the pressure on Iran.”

It is a basic principle of American democracy that the government can’t selectively target individuals simply because of their political beliefs or what they say.

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

The fact that any president, or any administration, is willing to engage in such transparent efforts to intimidate someone should outrage all Americans, regardless of how they feel about Congresswoman Omar’s political views.

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.