[Fall of the Berlin Wall] is a reminder that the commitment of the United States, to Europe is enduring and it's rooted in the values we share; our commitment to democracy, our commitment to rule of law, our commitment to the dignity of all people in our own countries and around the world.

Simple exchanges can break down walls between us, for when people come together and speak to one another and share a common experience, then their common humanity is revealed. We are reminded that we're joined together by our pursuit of a life that's productive and purposeful, and when that happens mistrust begins to fade and our smaller differences no longer overshadow the things that we share. And that's where progress begins.

Angela Merkel has been an extraordinary partner for me and for the United States throughout my presidency.

Think about it: Iran, Cuba, Venezuela - these countries are tiny compared to the Soviet Union. They don't pose a serious threat to us the way the Soviet Union posed a threat to us.

It was unknowable then, but so much of the progress that would define the 20th century, on both sides of the Atlantic, came down to the battle for a slice of beach only six miles long and two miles wide.

I think Donald Trump is going to try as best he can to make sure that he delivers not only to the people who voted for him but for the people at large and the good thing is that there are going to be elections coming up so there's a built-in incentive for him to try to do that.

America is number one in wind power.