 Between 2001 and 2003, he served as president of the German Council on Foreign Relations.In 2001, Genscher headed an arbitration that ended a monthlong battle between German airline Lufthansa and its pilots' union and resulted in an agreement on increasing wages by more than 15 percent by the end of the following year.In 2008, Genscher joined former Czech President Václav Havel, former United States Ambassador to Germany John Kornblum and several other well-known political figures in calling for a Cold War museum to be built at Checkpoint Charlie in Berlin.