Newly released material from documents associated with President John F. Kennedy's assassination show that a key adviser wanted to break up the CIA after the disastrous Bay of Pigs invasion of Cuba in 1961.

The request, if met by expected White House and State Department opposition, is likely to present a quandary for the longtime diplomat, according to former State Department officials who know him. On Tuesday, just hours before he was due to appear, the State Department instructed Sondland not to testify at his scheduled hearing. He resigned from the State Department days before his congressional appearance in order to testify -- an option that Taylor could take. One former State Department official noted that "to some extent, the department needs him out there, needs a seasoned diplomat there." The former senior State Department official described Taylor as having "a remarkable legacy of service."