Copper prices drifted higher on Wednesday as investors waited for details of U.S. reciprocal tariffs, but tin extended a rally to its highest in nearly three years on supply fears. Benchmark three-month copper on the London Metal Exchange (LME) was up 0.2% at $9,711 a metric ton by 0953 GMT after slipping to its weakest in three weeks at $9,668.50. U.S. President Donald Trump was expected to impose sweeping new reciprocal tariffs on global trading partners on Wednesday, potentially drawing retaliation from all sides. He is expected to announce the levies at 2000 GMT. “Investors are confused, they’re uncertain about ... (full story)