The United States assesses that Ukraine's drone attack over the weekend hit as many as 20 Russian warplanes, destroying around 10 of them, two U.S. officials told Reuters, a figure that is about half the number estimated by Ukrainian President Volodymyr Zelenskiy.

Ukraine's SBU security service said it had hit the road and rail bridge linking Russia and the Crimean peninsula below the water level with explosives.

MOSCOW (Reuters) -Kremlin leader Vladimir Putin told U.S. President Donald Trump on Wednesday that a second round of peace talks between Russia and Ukraine was useful despite Kyiv's attempt to disrupt them by staging attacks Putin considered terrorism,

President Donald Trump said Wednesday that Russian President Vladimir Putin told him that Moscow would retaliate against Ukraine's major drone attack over the weekend, casting doubt that a peace deal to end the war could come soon.

Russian President Vladimir Putin told President Donald Trump in a phone call Wednesday that he was obligated to respond to Ukraine’s weekend drone attack, Trump said, setting up a potential escalation in the conflict just as the US president hopes to broker an end to the war.