ニクソン・ショック
Triffin predicted that the system would not be able to maintain both liquidity and confidence, a theory later to be known as the Triffin dilemma. His idea was largely ignored until 1971, when his hypothesis became reality, forcing US President Richard Nixon to halt convertibility of the United States dollar into gold, an initiative known colloquially as the Nixon Shock, which effectively ended the Bretton Woods System.