Operation Entebbe or Operation Thunderbolt was a successful counter-terrorist hostage-rescue mission carried out by commandos of the Israel Defense Forces (IDF) at Entebbe Airport in Uganda on 4 July 1976. The IDF acted on information provided by the Israeli intelligence agency Mossad. The hijackers threatened to kill the hostages if their prisoner release demands were not met. This threat led to the planning of the rescue operation. These plans included preparation for armed resistance from Ugandan troops.