Ian Bremmer shares his perspective on global politics this week:

How did the Biden-Putin summit go?

Well, we don't know, because it's not over yet, but I'll tell you, the opening, the opening looked fine. They shook hands. They're well prepped. Putin had to be on time because Biden was coming later. That made it a little bit easier. I think this is so overdone. This is not Gorbachev-Reagan. This is Russia in the context of a much more important strategic priority, China, for the United States. I expect little is going to come out, in terms of substance. The meeting will be cordial. There will be some desire to work together on things like arms control. The big question will be, what exactly is said, and if anything is committed to on cyberattacks, how the US is going to respond because so far Biden's looked pretty weak on that issue.