I came up during the cold war, and during the cold war it was always possible with the then Soviet Union - the Russian leaders behaved carefully and predictably. They didn't engage in nuclear saber rattling. They were able to work with us and align their interests where possible.

It's too low, and if Europe wants to be a force in the world it needs to be more than a moral and political and economic force, which Europe is because it shares many of our values and demonstrates them around the world. But it has to have the military power that goes with that as well.

Effective immediately, transgender Americans may serve openly, and they can no longer be discharged or otherwise separated from the military just for being transgender.

We have for decades now, and I've dealt with the Russians for 35 years, we have from time to time been able to, even though we have different interests, to align them. That alignment has become more and more difficult under Putin. You see that in Ukraine, you see it in the Middle East. To an extent where he actually defines Russian success as thwarting the United States.

I think it's important to America's future and to the future of the American dream and our people and the unity and purpose and cohesion of our society that everybody feel like the pace of change isn't just dizzying, but it can work for them and not against them.

We hope relevant countries will work together in the same direction to build the South China Sea into a sea of peace, friendship and co-operation.

In strategic affairs, clarity and consistency are very important.