The U.S. position on Jerusalem was not the reason why there hasn't been progress towards peace. The reason is that both the Israeli government and the Palestinian leadership are divided. And there is an enormous gap between Israelis and Palestinians. To say that this decision is only recognizing reality, that Jerusalem is the actual capital of Israel - well, that's true. But it's a selective recognition of reality.

China likes the idea of sovereign rights when it comes to organizing their politics as they see fit, and their economics. But they may grudgingly come to understand certain things differently in the area of climate or disease. China is a country fairly integrated into the world. Yet China is uncomfortable with this idea because they worry it will constrain their freedom, politically and economically, to do what they believe they need to do to maintain political stability and cohesion.

You cannot be effective if those who work for you are not. So building their effectiveness ought to be a priority.

I think Hillary Clinton is more suspicious, clearly tougher on Russian policy in Ukraine, Georgia, Syria; more willing to support sanctions; not against negotiating with Putin, but I would say tougher and more skeptical. And Donald Trump has talked about revisiting policy towards Ukraine, revisiting policy about sanctions towards Russia, not as quick to criticize Putin for what he might be up to in Syria and propping up the regime there - so just seems to be more open to the possibilities of working out some kind of a - I guess you'd call a modus vivendi with Putin.

I've worked for four presidents, and I've concluded that almost nothing is inevitable. History is to a significant extent the result of the interaction of personalities and ideas. And so I don't believe war between the U.S. and China is in any way inevitable, and it's well within the province of diplomacy and statecraft to avoid it.

If the president Donald Trump had connected the Jerusalem question to some other positions, linking it to Israeli and Palestinian behavior or putting the Jerusalem statement in a larger context of U.S. policy, it could have potentially advanced the peace process. But I don't see how singling it out might help.

Donald Trump is much more suspicious of international institutions; much more skeptical of the contributions that America's traditional allies have made; more willing, in some cases, to entertain the possibility of getting along with countries who some would call an adversary, such as Mr. Putin's Russia.