At the same time, Russia's almost daily aerial attacks on civilian areas of Ukraine continue, with overnight drone strikes on two cities injuring at least 14 people, including two children, emergency services said on Tuesday.
Ukraine's air force said that it shot down 122 out of 137 drones that Russia launched during the night.
US-brokered talks between Russia and Ukraine are on hold as Washington's attention is gripped by the Iran war, which has drawn the international spotlight from Ukraine's plight as it strives to hold back Russia's bigger army.
Despite being short of soldiers, Ukrainian forces had recently retaken nearly all the territory of the southeastern Dnipropetrovsk industrial region during a counteroffensive, driving Russian troops out of more than 400 square kilometres, Major General Oleksandr Komarenko said in an interview published on Tuesday by local media outlet RBC-Ukraine.
He described the overall situation on the front line as difficult but under control, with the heaviest fighting continuing near Pokrovsk in eastern Ukraine and Oleksandrivka in the south, where he said Russian forces have concentrated their main effort.
There was no independent verification of his description of the military situation.
However, the Institute for the Study of War, a Washington-based think tank, said recent Ukrainian counterattacks "are generating tactical, operational and strategic effects that may disrupt Russia's spring-summer 2026 offensive campaign plan".
Meanwhile, a Kremlin aide said Russian President Vladimir Putin told US President Donald Trump late on Monday that Russian forces were "advancing rather successfully" in Ukraine.
That progress should encourage Kyiv to "move toward a negotiated settlement of the conflict", Yuri Ushakov told reporters, even though Ukrainian President Volodymyr Zelenskiy has repeatedly demanded a lasting peace deal and European governments accuse Putin of feigning interest in talks while the Russian military keeps hammering Ukraine.
The Kremlin is hoping the Iran war will bring it a financial windfall from rising oil prices, distract global attention from the Ukraine war, run down Western arsenals and force the US and its NATO allies to reduce military support for Kyiv.
Zelenskiy, meanwhile, is hoping that by supplying its cutting-edge and battle-tested drone technology to the United States and its Gulf partners for the war in the Middle East, Ukraine will win more international diplomatic leverage against Moscow.
He is also seeking a reciprocal supply of advanced American-made air defence missiles Ukraine needs to counter Russia's attacks.
