John brennan

The president's Monday morning tweets again targeted the U.S. intelligence community and the Russia probe.

Trump has a "very flawed understanding" of the Iran nuclear deal, former CIA Director John Brennan said.

John Brennan unfavorably compared Trump to George W. Bush, Clinton, and Obama, who "put country above their personal interests."

Brennan spoke out after the FBI condemned GOP memo for "material omissions of fact."

Threatening to cut off countries for disagreeing with U.S. stance on Jerusalem "is beyond outrageous" for the president, John Brennan says.

In his appearance Tuesday before the House Intelligence Committee, the CIA's former chief could only hint at what we've known for decades: that we influence foreign elections too.

The former CIA director revealed publicly for the first time that he was "concerned" about contacts between Russian officials and people involved in the Trump campaign.

The former CIA director described for the first time a tense phone call he had with the head of Russia's security service in August.

Brennan has said he doesn't think President Trump "has a full appreciation of Russian capabilities."

"Spontaneity is not something that protects national security interests," the outgoing CIA chief says.

The Senate Intelligence Committee could change hands if Democrats prevail in a number of key races.

The former head of the agency ribbed remarks by the current CIA chief, John Brennan.

The 15-year-old, who uses the online moniker "Cracka", was arrested by police in the U.K.

The history of technocratic approaches to security is littered with claims of effectiveness that are overstated, unproven or just wrong.

Former White House National Security Adviser Richard Clarke calls the push "unseemly."

Foiling those plots, however, could prove difficult.

The presidential briefings will cover what the spy agency told JFK and LBJ about foreign crises and leaders.

Social media and other technology are making it increasingly difficult to combat militants who are using such modern resources to share information and conduct operations

Frank Archibald's departure comes amid reports that the spy agency will begin a controversial reorganization plan.

Brennan, who was a senior CIA official in the Bush administration after 9/11, denies agency misled government.

The CIA's drone killing program, too, should be scrutinized.

A damning report puts the spy agency and its Republican backers on the defensive.

CIA Director John Brennan was up on Capitol Hill hat in hand, apologizing to Feinstein and her Republican counterpart, committee Vice-Chair Saxby Chambliss

CIA Director John Brennan publicly denied Feinstein's accusations