"Sen. Patrick Leahy, D-Vt., vice chairman of the Senate Intelligence Committee, inadvertantly disclosed a top secret communications intercept during a [1985] television interview," reported the San Diego Union-Tribune in a 1987 editorial criticizing Congress' penchant for partisan leaks.
"The intercept, apparently of Egyptian President Hosni Mubarak's telephone conversations, made possible the capture of the Arab terrorists who had hijacked the cruise ship Achille Lauro and murdered American citizens," the paper said, adding, "The reports cost the life of at least one Egyptian operative involved in the operation."
In July 1987, the Washington Times reported that Leahy leaked secret information about a 1986 covert operation planned by the Reagan administration to topple Lybian strongman Moammar Gaddhafi.
"I thought [the operation] was probably the most ridiculous thing I had seen, and also the most irresponsible," the leading Intelligence Committee Democrat allegedly said of the secret plan.
Unidentified U.S. intelligence officials told the Times that Leahy, along with Republican panel chairman Sen. Dave Durenberger, communicated a written threat to expose the operation directly to then-CIA Director William Casey.
Weeks later, news of the secret plan turned up in the Washington Post, causing it to be aborted.
Leahy vehemently denied he talked to the press about any of the administration's covert operations, saying, "I never have, and I'm not going to start now."
But just a year later, as the Senate was preparing to hold hearings on the Iran-Contra scandal, the Vermont senator had to resign his Intelligence Committee post after he was caught leaking secret information to a reporter.
The ranking Intelligence Committee Democrat decided to let an NBC reporter comb through the committee's confidential draft report on the scandal. The network aired a report based on the inside information on Jan. 11, 1987.
After a six-month internal investigation, Leahy "voluntarily" stepped down from his committee post, releasing a statement calling his resignation "a suitable way to express ... anger and regret" over his lapse.
Leahy's anger, he said, was at himself, "for carelessly allowing the press person to examine the unclassified draft and to be alone with it."
The Vermont Democrat's Iran-Contra leak was considered to be one of the most serious breaches of secrecy in the committee's 10-year history.
After Leahy's resignation, the Senate Intelligence Committee decided to restrict access to committee documents to a security-enhanced meeting room.
In fact, the final committee report turned out to be considerably different from Leahy's leaked draft.