1949 The treaty creating NATO goes into effect.
1962 Spiegel scandal: ''Der Spiegel'' publishes the article ''"Bedingt abwehrbereit"'' (''"Conditionally prepared for defense"'') about a NATO manoeuver called "Fallex 62", which uncovered the sorry state of the Bundeswehr (Germany's army) facing the communist threat from the east at the time. The magazine is soon accused of treason.
1974 Turkish occupation of Cyprus: Forces from Turkey invade Cyprus after a "coup d' etat", organised by the dictator of Greece, against president Makarios. NATO's Council praises the United States and the United Kingdom for attempts to settle the dispute. Syria and Egypt put their militaries on alert.
1985 United States Navy F-14 fighter jets intercept an Egyptian plane carrying the ''Achille Lauro'' cruise ship hijackers and force it to land at a NATO base in Sigonella, Sicily where they are arrested.
1995 NATO launches Operation Deliberate Force against Bosnian Serb forces.
1995 NATO begins peacekeeping in Bosnia.
1999 Kosovo War: NATO commences air bombardment against Yugoslavia, marking the first time NATO has attacked a sovereign country.
1999 NATO mistakenly bombs a convoy of ethnic Albanian refugees – Yugoslav officials say 75 people are killed.
2001 NATO backs U.S. military strikes following 9/11.
2001 NATO confirms invocation of Article 5 of the North Atlantic Treaty.
2002 NATO declares Russia a limited partner in the Western alliance.