1.   Four Cuban-Americans died in the incident, which plunged relations between the United States and Cuba into a period of deepened hostility that has yet to lift.

2.   His death triggered angry protests in the Serb-controlled part of Bosnia and plunged relations between Serbs and the court to an all-time low.

3.   The bombing plunged relations to their lowest level in decades.

4.   However, the public revelations about the incident could plunge relations between Iran and its top trading partner to a new low.

5.   NATO ambassadors spent most of Wednesday discussing the future of the campaign, which has plunged relations with Russia into crisis and provoked strains within the alliance itself.