VILNIUS, Lithuania — President Biden ridiculed a reporter Wednesday by saying that Ukraine would join NATO “an hour and 20 minutes” after the end of its war with Russia and mockingly calling the question “really insightful.”

Biden bristled at an American journalist at the conclusion of his meeting with Ukrainian President Volodymyr Zelensky during the annual NATO summit in Lithuania’s capital.

“How soon after the war would you like to join NATO?” a reporter asked Zelensky, who had criticized the Atlantic alliance for withholding an invitation to join until after the war.

Biden answered the question instead.

“An hour and 20 minutes,” the president, adding jeeringly, “You guys ask really insightful questions.”

The 80-year-old commander in chief is known for lashing out at journalists who pose questions he dislikes and blasted the question after major news outlets focused heavily on his decision to skip a Tuesday dinner with NATO leaders, drawing attention to his old age.

Biden and Zelensky met after the Ukrainian leader blasted NATO for its “absurd” decision to draft new language vaguely describing standards for Kyiv’s admission.

Zelesnky on Wednesday said during an event with NATO Secretary-General Jens Stoltenberg that he wanted an invite for the “signal” it would send the Kremlin, even though he recognizes that “Ukraine cannot be a member nation of NATO as long as the war continues on our territory.”