The real problem for Brenner and IG Metall was that during the postwar decades there was, in West Germany, no appetite for the politics of the left. At home the economic and socio-political fruits of the so-called Wirtschaftswunder ("economic miracle") years did little to engender political protest. Internationally the use of Soviet military muscle in 1956 to crush reform movements in Hungary and Poland, the Suez Crisis of the same year, the sealing off of the internal German border during the 1950s, culminating in with the erection of the Berlin Wall in 1961, the Cuban Missile Crisis of 1962 and the overall intensification of cold war tensions which brought the world to the brink of nuclear war combined to determine that during the 1950s and most of the 1960s insufficient West Germany voters were willing to vote against the centre-right &lt;a href="CDU/CSU"&gt;CDU/CSU&lt;/a&gt; coalition under the reassuring leaderships of Adenauer, Erhard and Kiesinger.