President Biden repeated a dubious claim about the death of his son, Beau Biden, during a call with the parents of a U.S. service member who was recently killed in an attack on a base in Jordan near the border with Syria.

While speaking on Tuesday to the parents of 24-year-old Specialist Kennedy Ladon Sanders, who lost her life in an Iran-backed drone strike this month in northeast Jordan that killed three service members total and injured 25 others, Biden said he lost his son to the war in Iraq.

During the call, which was first shared by the Atlanta Journal Constitution, Biden told Shawn Sanders and Oneida Oliver-Sanders that their daughter was being posthumously promoted to sergeant.

“Oh wow, that is the best news I’ve heard today, thank you so much,” Oliver-Sanders said as she and her husband were brought to tears. “You don’t know how much that means to us.”

The White House said President Biden was briefed Sunday morning by Defense Secretary Lloyd Austin, National Security Advisor Jake Sullivan, and Principal Deputy National Security Advisor Jon Finer about the attack, which marked a significant escalation as it’s the first time U.S. troops have been killed by enemy fire in the Middle East since the Israel-Hamas war began on Oct. 7.

Biden promised on Sunday to “hold all those responsible to account at a time and in a manner [of] our choosing” but said the U.S. wasn’t seeking to get into another conflict in the Middle East.

Fox News’ Brandon Gillespie Jeffrey Clark, Danielle Wallace, and The Associated Press contributed to this report.

Kyle Morris covers politics for Fox News. Story tips can be sent via email and on X: @RealKyleMorris.