Global markets are reeling after President Trump's announcement of sweeping tariffs - 10% on most nations, 54% on China, and 26% on India - sparking the worst one-day plunge since the COVID-19 crisis. The S&P 500 cratered nearly 5% on April 3, with markets in Europe and Asia following suit as investors brace for a trade war. Uncertainty reigns - will this bold move reshape global trade, or fracture it? Watch The Last Word.