Ukrainian forces have recaptured more than 600 square km of territory since the start of 2026, Ukraine's top army commander claimed, as the tide is turning in Ukraine's favour.Oleksandr Syrskyi said on Monday that in May alone, Ukraine recaptured 100 more square km of territory than it lost.Writing on Telegram, Syrskyi did not specify where the gains took place, saying only that in separate areas of the frontline, Ukrainian forces continued to maintain the initiative.Last week, analysis based on data from the Institute for the Study of War found Ukraine retook more territory than it lost in May for the second consecutive month.Ukraine gained a net 282 square kilometres in the weeks after Russia had already surrendered around 120 square kilometres in April.Russia occupies around a fifth of its neighbour: the Crimean peninsula, which it annexed in 2014, most of the eastern regions of Donetsk and Lugansk (Donbas), and large parts of the southern Zaporizhzhia and Kherson regions. But Ukraine's increasingly effective drone campaigns are disrupting Russia's ability to move troops and supplies to frontline positions, according to the ISW.'Ukraine's successful mid-range and frontline drone strike campaigns are limiting Russia's ability to transport personnel to the frontline and to supply and sustain frontline positions,' the think tank said.