It happened so fast, and without fanfare, that even his former vice president shrugged it off, but a May 2005 grenade attack on former President George W. Bush in Tbilisi, Georgia, “was serious,” according to an upcoming book.

In “Accidental Presidents,” out April 9, author Jared Cohen reports that the weapon was thrown so close to Bush during a trip to the former Soviet satellite that “shrapnel would hit him upon explosion.”