There are legitimate concerns and anxieties that the forces of globalisation are leaving too many people behind - and we have to take those concerns seriously and address them. But the answer isn't to turn inward and embrace protectionism. We can't just walk away from trade.

We cannot tolerate a nuclear Iran. It would be a game changer. Not only would it threaten Israel, a country that is our stalwart ally, but it would also create an environment in which you could set off an arms race in this Middle East.

The UK is an extraordinary partner for America and a force for good in an unstable world. I hope it remains strong, robust and united.

Estiven Rodriguez couldn't speak a word of English when he moved to New York City at age nine. But last month, thanks to the support of great teachers and an innovative tutoring program, he led a march of his classmates - through a crowd of cheering parents and neighbors - from their high school to the post office, where they mailed off their college applications. And this son of a factory worker just found out he's going to college this fall.

I think that there's a power in that [information through tweets and sound bites ]. There's also a danger, what generates a headline or stirs up a controversy and gets attention isn't the same as the process required to actually solve the problem.

If you work hard. And are responsible. You should be rewarded.

A political candidacy built around hope and change and compromise would eventually become a presidency of crisis and confrontation.