Whether the U.S.-Russia summit can lead to a deal to produce peace in Ukraine more than 3 1/2 years after Moscow’s invasion remains to be seen.

The president's comment came after attending a virtual meeting with European leaders, including Ukrainian President Volodymyr Zelensky, who told the group that Putin “is bluffing” about seeking peace.

Ukrainian President Volodymyr Zelenskiy said on Wednesday that he warned U.S. President Donald Trump ahead of his talks with Vladimir Putin this week that the Russian leader is "bluffing" about his desire to end the war.