White House national security spokesman John Kirby struggled Thursday when asked to name the top foreign policy achievement for President Joe Biden in 2023. During a briefing with reporters — the last of the year — Ed O’Keefe of CBS News asked Kirby to look back over the year and name the most important success. Kirby waffled for a moment, saying that he was running out of time, and suggesting that Press Secretary Karine Jean-Pierre wanted him to go.