A break in diplomatic relations occurred in 1973 when the then Ambassador Hubert de Bèsche and his newly elected successor Yngve Möller were declared undesirable in the United States as a result of a diplomatic crisis that followed Olof Palme's statement about the Hanoi bombings in December 1972. In 1974 the new Swedish Ambassador Wilhelm Wachtmeister took office and held the post until 1989. Wachtmeister was eventually given the title Dean of the Diplomatic Corps (Doyen) as the longest serving Ambassador in Washington, D.C. Other famous diplomats who held the Ambassador post are Jan Eliasson, Rolf Ekéus and Anders Thunborg.