The FBI conducted a court-authorized search at John Bolton’s home as part of a national security investigation into whether he disclosed classified information in his 2020 book, according to two people familiar with the matter.

An investigation seeks to determine whether Mr. Bolton illegally shared or possessed classified information, according to two people familiar with the case.

President Donald Trump’s former national security adviser thought he looked “tired” at his Alaska summit, which did him no favors standing opposite Russian President Vladimir Putin. John Bolton said on CNN that Putin “clearly won” the high-profile encounter on Friday given that he escaped without agreeing to a ceasefire with Ukraine and without additional sanctions on Russia.