April 12

Madrid , Spain: A bomb explodes in a restaurant popular with American servicemen, killing 18, all Spaniards, and injuring 82, including 15 Americans. It is the worst act of terrorism in Spain since the end of the Spanish civil war in 1939. Various groups claim responsibility for the bombing in calls to news organizations, including the Basque separatist group, ETA, and Islamic Jihad. 10

June 14

Two Lebanese Shiite gunmen seize TWA flight 847 bound from Athens to Rome with 104 Americans and 49 other passengers and force it to Beirut , Lebanon , where they pick up more gunmen. From there, they fly to Algiers . The hijackers release passengers, until 39 hostages remain. They demand the release of 766 Lebanese prisoners being held in Israel . On the second day of the standoff, the plane returns to Beirut , and the hijackers kill U.S. Navy diver Robert Stethem, and throw his body out on the runway. Israel releases 31 Lebanese prisoners, but insists the release is not related to the standoff. After 17 days in captivity, the hostages are transported to Damascus , Syria , and released. 1, 2, 9, 18