The Iranians may simply try to run out the clock.

Around the world, Gandhi, Nelson Mandela -- what they did was hard. It takes time. It takes more than a single term. It takes more than a single president. It takes more than a single individual.

There aren't a lot of situations where I look back and I say, The decision I actually made or the course we actually pursued was the wrong course.

The single biggest threat that we face is a nuclear weapon or some weapon of mass destruction. What that means is that we have to be extraordinarily aggressive and vigilant in controlling nuclear proliferation.

I'm going to insist on making sure that we've got decent funding, that we've got enough teachers, that we've got computers in the classroom, but unless you turn off the television set and get over a certain anti-intellectualism that I think pervades some low-income communities, our children are not going to achieve.

Unemployment is low, incomes are up, poverty is down - and that's going to be a lasting change.

As we keep up the pressure, our air campaign will continue to hit ISIL harder than ever.