I think when it comes to the issues, I'd advise him to stick to the script. But, I mean, Donald Trump is going to have some very tough conversations and he's going to be talking about some very tough and complicated issues in all of the places that he visits.I think anytime a president does things that are humanizing, I think it's - it's good.

The United States has been a global power since late in the 19th century.

Defense is not like other discretionary spending.

Most governments lie to each other. That's the way business gets done.

I don't think any president that I worked with has ever said 'pretty please.

I have tried to maintain civil relationships with everyone I meet - and, even if I violently disagree with them, try to be respectful.

If possible, to be in a position to announce who is going to step in as the interim immediately. And if possible, to announce who you're going to nominate to replace that person. For that to be somebody of impeccable integrity and reputation disarms a lot of the worst criticism that it's some kind of a power play. It's a professional approach to replacing a senior official, which is always going to get a lot of attention.