We have to face up to systemic racism. We see it in jobs, we see it in education, we see it in housing. But let's be really clear; it's a big part of what we're facing in the criminal justice system.

If there are issues, if there's wrongdoing, people have to be held accountable and we have to try to deter future bad behavior.

This country of ours, this system of ours, the rule of law, the opportunity to get an education and go as far as your hard work and ambition will take you, and we created the biggest engine of economic growth in the world, the American middle class.

It cannot be an American fight. And I think what the president [Barack Obama] has consistently said - which I agree with - is that we will support those who take the fight to ISIS. That is why we have troops in Iraq that are helping to train and build back up the Iraqi military, why we have special operators in Syria working with the Kurds and Arabs, so that we can be supportive.

It's very much in our interest to unite [with Bernie Sanders] as quickly as possible to begin the campaign against Donald Trump. And I think the facts really speak for themselves. I have a won a big majority of the popular vote of the states, of pledged delegates, and we want to go forward in a positive and unified way.

Congress has all sorts of rules, hedge fund managers, private equity managers, executives, movie stars, fall into that allow them to escape or defer into the future not paying their taxes. And if you can defer your tax into the future, it's the best deal in the world, because you don't just get to eat your cake and have it too. You get to eat your cake and have a bigger cake.

I don't have any comment on who the people of Russia choose to be their leaders.