Bolton noted that Trump has “already come after me and several others,” alluding to the revocation of his security detail, which he received following threats against his life from Iran.

On Friday, F.B.I. agents searched the home and office of President Trump’s former national security adviser, John Bolton, to determine whether he illegally shared or possessed classified information.

FBI agents' searches of Bolton's Maryland home and Washington office, purportedly part of an investigation into the handling of classified information, raise the question of possible future actions a...