From Wikipedia

Raid On The Reactor

Operation Opera , also known as Operation Babylon and Operation Ofra was a successful surprise Israeli air strike against the Iraqi Osirak nuclear reactor  in 1981.

In the late 1970s, Iraq purchased an "Osiris class" nuclear reactor from France. Israeli military intelligence assumed this was for the purpose of plutonium production to further an Iraqi nuclear weapons program. Israeli intelligence also believed that the summer of 1981 would be the last chance to destroy the reactor before it would be loaded with nuclear fuel.

On 7 June 1981, a squadron of Israeli Air Force F-16A fighter aircraft, with an escort of F-15As, bombed and heavily damaged the Osirak reactor.