Russia on Monday accused Ukraine of launching a large-scale drone attack on one of President Vladimir Putin’s residences, a claim Kyiv rejected as a "lie" intended to disrupt U.S.-backed efforts to negotiate an end to the war.

Russian Foreign Minister Sergei Lavrov, who does not typically announce drone strikes, said Ukraine had fired "91 long-range unmanned aerial vehicles" at Putin's residence in the Novgorod region between late Sunday and early Monday, all of which were shot down.

"Given the complete degeneration of the criminal Kyiv regime, which has shifted to a policy of state terrorism, Russia's negotiating position will be reconsidered," Lavrov said, without elaborating.

Ukrainian President Volodymyr Zelenskyy, who met with U.S. President Donald Trump on Sunday for talks on ending the war, called Russia's claim "a complete fabrication" designed to derail the peace process and suggested Moscow was preparing to intensify its bombardment of Ukraine.

"Russia is at it again, using dangerous statements to undermine all achievements of our shared diplomatic efforts with President Trump's team," the Ukrainian leader wrote on X.