We know that weapons, heavy weapons continue to flow across the border from Russia into Ukraine. And we have now, in recent days, indications that Russians - Russian military units themselves have, on occasion, fired into Ukraine.

I have to separate my personal concerns from my professional responsibilities.

There are plenty of meetings, receptions, dinners, and so if you are [at the U.N.] any length of time, and I was there for four and a half years, you formed pretty significant relationships with people from all over the world. And that's important to the work you do. If you're trying to rally the General Assembly to vote for something that matters to the United States, those personal relationships count.

We have been very clear that Israel has an undeniable right to self-defense and that the rockets that it has faced coming out of Gaza incessantly, the tunnels that are legion and are being used to infiltrate into Israel are very legitimate security concerns, for which they have an obligation - against which they have an obligation to act.

I'm apologetic when I feel like I've made a mistake. And when I have done a disservice to myself or someone else. But I don't feel a need to apologize for doing or saying something that I think needs to be said, just because it may not sit comfortably with somebody else.

If you want change, you have to make it. If we want progress we have to drive it.

One can't erase the tremendous burden of apartheid in 10 years, 20 years, I believe, even 30 years.