CNN’s Dana Bash on Thursday described President Joe Biden’s witty retort to a reporter’s question about former president and current GOP nominee Donald Trump as a “mic-drop moment.”

Biden had just announced the U.S.-Russia prisoner swap — which saw the release back to the United States of unjustly detained Wall Street Journal reporter Evan Gershkovich, among others — when a reporter reminded the president about his predecessor’s claims that he could have gotten the prisoners freed “without giving anything in exchange.”

“What do you say to that? What do you say to President Trump now, the former president?” the reporter added.

Biden immediately replied, “Why didn’t he do it when he was president?”

Biden then walked off.

“I think that was what they call a mic-drop moment at the end there,” Bash commented on Thursday’s broadcast of “Inside Politics.”

“What a historic moment,” Bash added, noting how Biden, who last month quit his reelection campaign and endorsed Vice President Kamala Harris as his replacement, is now “trying to finish out his one and only term and doing so with, a tremendous, tremendous victory for these families of these people who were held, he said ‘innocently.’”

Trump previously repeatedly attacked Biden over the issue and predicted his successor wouldn’t be able to arrange for Gershkovich’s release.

Following the swap, Trump demanded to know “the details.”

“How many people do we get versus them? Are we also paying them cash? Are they giving us cash (Please withdraw that question, because I’m sure the answer is NO)?” he wrote on his Truth Social platform. “Are we releasing murderers, killers, or thugs? Just curious because we never make good deals, at anything, but especially hostage swaps,” he added.