In this June 16, 2016 file photo, CIA Director John Brennan testifies on Capitol Hill in Washington, before the Senate Intelligence Committee. Brennan, said on “Fox News Sunday Jan. 15, 207, that Donald Trump’s “talking and tweeting” is not in the nation’s interest and that the president-elect lacks a full understanding of the threat Russia poses to the U.S. The outgoing CIA director charged on Sunday that Donald Trump lacks a full understanding of the threat Moscow poses to the United States, delivering a public lecture to the president-elect that further highlighted the bitter state of Trump’s relations with American intelligence agencies.