Core Viewpoint - The U.S. dollar has fallen to its lowest levels in four years due to dovish Federal Reserve rate expectations and discussions of coordinated intervention to support the Japanese yen [1] Group 1: Dollar Performance - The U.S. dollar has extended its slump in global foreign exchange markets, reaching the lowest levels in four years [1] - Investors are repricing the greenback amid changing monetary policy expectations [1] Group 2: Japanese Yen Intervention - Reports indicate that the New York Fed, likely in collaboration with the U.S. Treasury, contacted foreign exchange trading desks as part of a "rate check" effort, which typically precedes direct intervention [1] - The Japanese yen, which had been at its lowest levels in 18 months, surged nearly 3% following these discussions but has since stabilized at 153.31 [1]