President Trump vowed last year to release all the long-secret files related to the JFK assassination, but the administration announced Thursday that some documents will remain redacted until October 2021 for national security reasons. Trump gave the CIA, FBI and other agencies a deadline of April 26 to release documents related to the investigation into President John F. Kennedy's assassination by Lee Harvey Oswald on Nov. 22, 1963, in Dallas. Trump ... had promised to release the entirety of the 5 million pages of records, most of which have been available since the late 1990s. Jefferson Morley, a former Washington Post staff writer ... said in an interview that he was disappointed by Trump's decision to delay the full release for another three years and, possibly, beyond. Trump said that all the JFK files will be released, but the truth is that thousands of JFK files are still secret. The clear intent of Congress was to have these released last October and now we're talking about 2021," Morley said. "The point is that the CIA wants to keep this secret forever. It's a very clear statement of intent." Morley also said that the Trump administration is not complying with the stipulations of the Kennedy Records Act, which requires that the administration provide declassified explanations for withheld documents. Morley, who has been fighting the CIA in federal court for the last 15 years ... said he was quickly going through the 19,000 files that were released Thursday and came across redactions that made little sense to him.