Fed Holds, Guidance Ends, US-Iran MOU Advances, Market Downturn

1. The Federal Reserve maintained interest rates but abandoned forward policy guidance, triggering a rise in US Treasury yields and a decline in stock markets and gold prices.
2. The United States and Iran reached an initial Memorandum of Understanding to unfreeze funds and permit oil exports, despite President Trump's threat of sanctions if Iran does not comply.
3. Major US indexes including NASDAQ, Dow Jones, and S&P 500 closed down over 1% significantly, while precious metals like gold, silver, and palladium also experienced sharp drops.