21."I'm not worried that Ukraine could suddenly lose. I don't see the potential for a massive (Russian) breakthrough," Cavoli said."And this is not a political but a military vision. It's got to do with both sides, the effective defenses that the Ukrainians have been putting in, but also the difficulty that the Russian side has in generating significant offensive forces to be able to exploit a potential breakthrough."Russia quickly advanced in Ukraine's Donetsk Oblast in late 2024, making operationally significant gains near Toretsk, Chasiv Yar, and Kupiansk, as well as on its own soil in Kursk Oblast. Ukraine has struggled to contain the Russian offensive as Ukrainian forces are overstretched and dealing with manpower shortages.Despite Russian advances, Cavoli said Russia's slow and incremental push is "exhausting" for Moscow's forces.