WASHINGTON - The CIA released hundreds of pages of internal reports Tuesday on assassination plots, secret drug testing and spying on Americans that triggered a scandal in the mid-1970s. The documents detail assassination plots against foreign leaders such as Fidel Castro, the testing of mind-altering drugs like LSD on unwitting citizens, wiretapping of U.S. journalists, spying on civil rights and anti-Vietnam war protesters, opening of mail between the United States and the Soviet Union and China and break-ins at the homes of ex-CIA employees and others. The 693 pages, mostly drawn from the memories of active CIA officers in 1973,...