Suez Crisis were partly to blame because they "inexplicably" shut down their Suez Canal base in 1954. What appalled Adenauer about the crisis was that the United States had come against the attack on Egypt and voted with the Soviet Union at Security Council against Britain and France, which lead Adenauer to fear that the United States and Soviet Union would "carve up the world" according to their own interests with no thought for the interests of European states. Adenauer refused to cancel a planned visit to Paris on 5–6 November 1956 and his summit with Mollet was clearly meant to be
Frustration–aggression hypothesis unjustified condition participants. The authors concluded that unjustified frustration leads to greater level of aggression, compared to justified frustration, which, in turn, results in higher levels of aggression compared to the non-frustration situations. In 1964, Leonard Berkowitz stated that it is necessary to have an aggression stimulus to make aggression take place. Then in 1974 and 1993, he remodified the frustration/aggression hypothesis into a theory that removed the importance of aggressive cues to the aggressive behavior. Which is to say, extremely angry subject will show aggression even if the aggression cue is absent. The most provocative theory introduced by Berkowitz