Former CIA boss John Brennan says doesn't know if there was collusion between the Trump campaign and Russia.
FOX's Rachel Sutherland reports from Washington:
Brennan told the House Intelligence Committee he had concerns the Russians were trying to lure "U.S. persons" into working for them, wittingly or unwittingly:
(Brennan) "I felt as though the FBI investigation was certainly well-founded."
Brennan said he told his Russian counterpart to cut out the meddling during a phone call in August of 2016:
(Brennan) "I believe I was the first U.S. official to brace the Russians on this matter."
He also testified that in the following weeks, he briefed the White House and top lawmakers about Russia's activities.
In Washington, Rachel Sutherland, FOX News.