President Vladimir Putin said in remarks published on Sunday that Russia had sufficient strength and resources to take the war in Ukraine to its logical conclusion, though he hoped that there would be no need to use nuclear weapons.

Ukrainian President Volodymyr Zelenskiy said on Sunday that a ceasefire with Russia in its more than three-year-old war is possible at any moment.

Ukraine and Russia are at odds over competing ceasefire proposals. Moscow has accused Ukrainian President Volodymyr Zelenskyy of threatening the safety of dignitaries attending Victory Day celebrations after he dismissed Russia’s unilateral 72-hour ceasefire.