Joe Biden has apparently settled on his secretary of state nominee. As reported by outlets including the AP, CNN, the New York Times, and Bloomberg, sources say Biden will name Antony J. Blinken, a longtime aide and his closest foreign policy adviser. Blinken, 58, launched his career at the State Department while Bill Clinton was president; during Barack Obama's administration, he served as deputy secretary of state and deputy national security adviser. Biden's incoming chief of staff said Sunday that the president-elect will start announcing members of his Cabinet on Tuesday. He is expected to nominate Jake Sullivan, also a close aide, as national security adviser. (The AP explains why other top secretary of state contenders could have been "thorny" to get confirmed.)