Vice President Mike Pence endured a thorny line of questioning from his predecessor Dick Cheney about President Donald Trump’s foreign policy decisions during a closed-door weekend retreat for Republican donors, Politico and The Washington Post reported.

Cheney, vice president in the George W. Bush administration, tore into the Trump administration’s wavering commitment to NATO during an off-the-record Q & A session Saturday at the American Enterprise Institute’s annual World Forum in Sea Island, Georgia.

“We’re getting into a situation when our friends and allies around the world that we depend upon are going to lack confidence in us,” Cheney told Pence, according to a transcript of the exchange obtained by the Post.

Pence reportedly appeared caught off guard by Cheney’s pointed questions.

“Man, who wrote all these softball questions?” he joked at one point, Politico reported. He praised Trump for demanding U.S. allies “do more to provide for the common defense of all of our nations.”

A spokeswoman for AEI declined to confirm any details of the exchange. “The AEI event was off the record, as a result I have nothing to share,” she said.