Former White House chief of staff Jeff Zients said Biden’s ability to remember dates and names worsened over time, including during his time as president.

President-elect Joe Biden picked a number of people for top Cabinet and White House posts on Monday, including Antony Blinken to be secretary of state, Jake Sullivan as national security adviser and ...

Two of the top national security officials President-elect Joe Biden named on Monday, Antony Blinken as secretary of state and Jake Sullivan as national security adviser, are known for collegiality, ...

Former US National Security Adviser Jake Sullivan credited President Donald Trump while citing the need for caution despite success ...