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The U.S. Dollar Index surged to a 12-month high on Thursday, extending its gains for the second consecutive day. This rally was driven by the Federal Reserve's hawkish stance following its decision to maintain interest rates while signaling potential rate hikes by the end of 2026. The Fed's comments reinforced expectations of tighter monetary policy, which typically boosts the dollar's appeal as investors seek higher-yielding assets. However, the rally faced some counterpressure from improved geopolitical tensions after the U.S. and Iran signed an agreement, which could reduce global risk premiums and temper dollar demand.

For markets, the dollar's strength impacts currency pairs like EUR/USD and USD/JPY, with potential ripple effects on commodities priced in USD, such as gold and oil. Traders are closely monitoring the Fed's policy trajectory, as rate hikes could shift capital flows and influence equity markets, particularly in emerging economies. The dollar's performance also affects Gulf investors with USD-denominated assets, as a stronger greenback may alter hedging strategies and trade balances.

Looking ahead, the key focus will be on the Fed's next policy meeting in September and economic data like inflation and employment reports. If the central bank maintains its hawkish tone, the dollar could consolidate gains. Conversely, any signs of softening in the U.S. economy or a premature pause in rate hikes might cap further appreciation. Investors should also watch the geopolitical developments between the U.S. and Iran, as peace prospects could dampen the dollar's safe-haven appeal.