Trump has got to define what he seeks to achieve with Russia, and then use diplomacy and sometimes coercion to achieve those ends. Right now, aside from this fight with ISIS, which I would underscore, you know, the Obama administration has been trying to fight ISIS with Russia for several years now.

It should never be the goal of U.S. foreign policy towards any country to have a - quote, unquote - "good relation." Then what? What do we get out of that? We get - Trump is helping the approval ratings amongst Russians. How does that advance American national security interests?

Russians don't want to fight ISIS in Syria. They want to leave that to us. Aside from that, I don't know what are the objectives that Mr. Trump seeks in having a good relationship with Mr. Putin.

I think something that's really understudied and misunderstood is the use of information.

I think Russia is dangerous, not a superpower. I know what the president is trying to say. I worked for him for five years, not just two.He doesn't want us to overreact. He doesn't want to go back to the Cold War and some superpower competition. But my own view, and I think General Mattis stated something similar today, is that Russia is a challenge for the United States. It is a threat to some of our allies.

Putin is now nationalist. And what he does is, he tells the Russian people, OK, you may have a little less chicken in your pot, but I'm making Russia great again. Look what we're doing all other the world. Everyone is paying attention to us. And Russia is a great power, on par with the United States and others.

In retrospect, all revolutions seem inevitable. Beforehand, all revolutions seem impossible.