Trump announces 25% tariffs on Japan, South Korea
1. U.S. to impose 25% tariffs on imports from Japan and South Korea. 2. Tariffs begin August 1, potentially disrupting trade relations. 3. Market reacts negatively; S&P 500 drops 0.9% following announcement. 4. Dow Jones fell over 500 points; significant market volatility expected. 5. Developing story; further updates may affect market sentiment.