Classified briefings released on events that shook White House in '60s (Video)

The CIA has released 19,000 pages of classified intelligence briefings that took place during some of the darkest days of the 1960s.

It was President Kennedy, angered by bad intelligence on the disastrous attempted invasion of Cuba's Bay of Pigs, who first asked for a daily rundown of the latest top secret intelligence. 

"They called it 'The Pickle,' short for the president's intelligence checklist," CIA Director John Brennan said. 

The first version in 1961 was written to fit in the president's breast pocket and stamped "Top Secret."