Former President Donald Trump has threatened a 10% tariff on European goods, citing a disputed claim over Greenland. This move, reported by Bloomberg, raises the specter of a renewed trade war between the United States and the European Union, potentially disrupting transatlantic commerce.

The threat stems from Trump's longstanding assertion that the U.S. should acquire Greenland, a territory of Denmark. Such a unilateral tariff would violate World Trade Organization rules and could trigger immediate retaliation from Brussels, targeting key American exports like agricultural products and technology.

Investors and business leaders are bracing for volatility. A trade conflict would complicate supply chains for multinationals operating on both sides of the Atlantic and could dampen economic growth forecasts. The situation hinges on whether Trump formalizes this threat if he returns to power.