France's trade minister, Nicolas Forissier, issued a sharp rebuke to Donald Trump's threats of imposing tariffs on champagne. He repeated that Paris would retaliate if the US president acted on his warnings. This exchange reignites a long-standing trade dispute between two major economies.

Trump has frequently targeted European luxury goods, including wine and cheese, in past trade negotiations. The champagne industry, a protected French designation, represents a significant export worth billions annually. Any tariffs would disrupt a key market for French producers and could trigger broader transatlantic trade tensions.

The standoff underscores the fragility of US-EU trade relations. Investors will watch for any concrete policy moves that could affect market access. The outcome could set a precedent for other protected agricultural products, influencing future negotiations and corporate strategies.