international relations 1980 mass shootings in Europe 1980 murders in Greece July 1980 attack Armenia–Greece relations Armenia–Turkey relations Armenian Secret Army for the Liberation of Armenia Assassinated spies Assassinated Turkish diplomats July 1980 attack Greece–Turkey relations July 1980 crimes July 1980 events in Europe Terrorist attacks attributed to Armenian militant groups Terrorist incidents in Europe in 1980 Terrorist incidents in Greece in the 1980s