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.

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.

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.

Vladimir Putin knows exactly what he wants from the relationship with USA. In return for good relations, he wants lifting of sanctions, ratification, approval of his wars in Ukraine and Syria, and his dream of dreams, an acknowledgment of his sphere of influence in Ukraine and the former Soviet Union.

We can deal with Russia on counterterrorism. We have and I think we are right now. That's easy.

Take cyber-capabilities. We have way more cyber-capability than Russia do. We could intervene in their elections easily. We choose not to do so because we're a different country. That's what Obama was trying to say.

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