Trump released formerly classified files on the JFK assassination. But what makes information classified and how does it become declassified?

The documents offer a rare window into some of the U.S. government’s most secret work, including CIA operations in Cuba and safe houses in Maryland.

Newly released documents related to President John F. Kennedy’s assassination in 1963 are giving curious readers more details Wednesday into Cold War-era covert U.S. operations in other nations but didn’t initially lend credence to long-circulating