EXCLUSIVE: U.S. knew Saddam Hussein was launching some of the worst CHEMICAL ATTACKS in history -- and still gave him a hand.

"It has been previously reported that the United States provided tactical intelligence to Iraq at the same time that officials suspected Hussein would use chemical weapons. But the CIA documents, which sat almost entirely unnoticed in a trove of declassified material at the National Archives in College Park, Md., combined with exclusive interviews with former intelligence officials, reveal new details about the depth of the United States' knowledge of how and when Iraq employed the deadly agents."