Kyiv, May 1 -- Ukrainian President Volodymyr Zelensky on Thursday said Kyiv would ask Washington for more information about a Kremlin offer for a ceasefire on May 9, when Russia holds large-scale WWII commemorations. Russian leader Vladimir Putin made the proposal to pause fighting in his four-year invasion of Ukraine during a call with US counterpart Donald Trump a day earlier. The Kremlin said Trump supported the move. Zelensky wrote on social media he had instructed members of his team to get more details, saying Ukraine ultimately wants to end the war. "We will clarify what exactly this is about - a few hours of security for a parade in Moscow, or something more," Zelensky said in the statement. "Our proposal is a long-term ceasefire, reliable and guaranteed security for people, and a lasting peace. Ukraine is ready to work toward this in any dignified and effective format," he added. The centrepiece of Russia's May 9 celebrations is typically a bombastic display of Russia's military might with a parade through Red Square, presided over by Putin. Russia however announced this week that no military hardware will be included in the events, which typically draw world leaders allied with Moscow, as a precautionary measure given the threat of Ukrainian retaliatory strikes. Ukraine is in limbo waiting for a resumption of peace talks that might end the war with Russia, with the distraction caused by the conflict in Iran a key obstacle, according to Zelensky. Ukraine has yet to receive any new signals from either Russia or the US on when the negotiations might pick up again, while American envoys Steve Witkoff and Jared Kushner are still considering a visit to Kyiv, Zelensky told Bloomberg News in a phone interview on Thursday. The upshot is there have been no fresh indications on when or where the talks brokered by President Donald Trump's administration may take place, he said. "I think it all depends on how the situation in the Middle East unfolds," Zelensky said. Ukraine's Security Service, the SBU, said on Thursday its drones struck a Lukoil-owned refinery near Russia's city of Perm. The strike hit a key facility for primary oil processing at the refinery, which the SBU said was one of the largest in Russia and located some 1,500km from Ukraine. It added that it again struck an oil pumping station in the area, which was attacked overnight on Wednesday. Meanwhile, US officials confirmed the release of $400 million in funds for Ukraine that already had been authorised by Congress, after the top Senate Republican overseeing defence spending criticised Pentagon leaders for withholding the money....