Ian Bremmer shares his insights on global politics this week on World In :60.

Ukraine assassinated a top Russian general on a Moscow sidewalk. Is this a significant or dangerous escalation?

I think it's a significant escalation in the sense that the highest-ranked Russian official who has been killed by Ukraine in the war has been assassinated in Russia. And it's the kind of thing that, frankly, we've seen from Israel in terms of top officials, Lebanon and Hezbollah, Hamas in Gaza, in Iran. So I mean, this kind of asymmetric warfare, in addition to the fighting on the front lines, is something that we're increasingly getting used to everywhere. But of course, not so much from the weaker power, in this case, Ukraine.