Group 1 - The core viewpoint of the articles revolves around the anticipation of Federal Reserve Chairman Powell's speech and its potential impact on the US dollar index and interest rates [1][2] - The US dollar index is currently trading around 98.60, with expectations of further upward movement if Powell does not counter the market's rising interest rate cut expectations [1] - The US Treasury market is active, with the 10-year Treasury yield rising to 4.339% and the 2-year yield to 3.798%, reflecting concerns over persistent inflation and a weak labor market [1] Group 2 - The market is closely monitoring Powell's speech at the Jackson Hole meeting for signals regarding the Fed's next rate actions, with a 77% probability of a rate cut in September indicated by futures markets [1] - The dollar's ability to maintain its upward trend largely depends on Powell's tone; a dovish stance could push the dollar index above 99.320, while a rebuttal to rate cut expectations could lead to a pullback towards the 98.317 support level [2] - The dollar index has broken through the 98.317 resistance level and is now above the 50-day simple moving average, with the next resistance levels identified at 98.950 and the major target range of 99.177-99.320 [2]