In the year and a half since Russia launched its full-scale invasion of Ukraine, it has felt like the momentum has consistently been with Ukraine and its Western backers. But is that beginning to change? Months into the long-awaited Ukrainian counteroffensive, Kyiv has little to show for its military push. So why hasn't it been more effective?

While it looks like Ukraine’s military has recently launched a major thrust towards the south towards the Sea of Azov, the tide of war has yet to meaningfully change. So why haven’t the Ukrainians managed to do more, and to do it faster? And if a military resolution to the conflict isn’t coming any time soon, could a diplomatic solution be back on the table? Ian Bremmer addresses these questions with former US ambassador to Ukraine Marie Yovanovitch on GZERO World.

The two discuss a range of topics, from the state of the counteroffensive to whether a diplomatic resolution to the war is still possible. They also look back at Yevgeny Prigozhin's failed--or aborted, or curtailed--coup. Yovanovitch, for one, doesn't think that story is over by a long shot.

Watch GZERO World with Ian Bremmer every week at gzeromedia.com/gzeroworld or on US public television. Check local listings.