What is important is that we make sure to work together, that we understand our strength comes from unity and not division.

I know that the politics around trade can be very difficult - especially in an election year.

I think it is important first of all that the president of the United States underscores our commitment to partnering with countries around the world, even though we're not intimidated by terrorist organisations.

I want my children - I want Malia and Sasha - to understand that they've got responsibilities beyond just what they themselves have done. That they have a responsibility to the larger community and the larger nation, that they should be sensitive to and extra thoughtful about the plight of people who have been oppressed in the past, are oppressed currently.

For the world has changed, and we must change with it

I can't really characterize any country, except to say that we work well with a number of our foreign counterparts.

By 2025 we expect new spacecraft designed for long journeys to allow us to begin the first ever crewed missions beyond the Moon into deep space. So we'll start by sending astronauts to an asteroid for the first time in history. By the mid-2030s I believe we can send humans to orbit Mars and return them safely to Earth. And a landing on Mars will follow and I expect to be around in see it.