The Paris Bourse has experienced a significant downturn, erasing all gains made since the beginning of the year. This decline follows the announcement of new U.S. tariffs by Donald Trump, which has triggered a negative reaction across global markets. As of April 4, 2025, the CAC 40 index has fallen by 4.15%, reflecting the heightened tensions in international trade and the impact of these tariffs. Reports indicate that the losses are not confined to Paris, as markets in London, Frankfurt, and Wall Street are also experiencing declines due to the same factors. The situation has left investors questioning the stability of the markets as they respond to the ongoing trade war and its implications.