President hardens stance on trade deadline, Nvidia gets closer to record $4 trillion market value, and more news to start your day.

By Elizabeth Howcroft PARIS (Reuters) -European stocks opened slightly higher on Wednesday, showing little reaction to U.S. President Donald Trump's announcement that he would impose a 50% tariff on imported copper and soon introduce levies of up to 200% for pharmaceuticals.

It was another day of reacting to Donald Trump’s latest remarks. The president sowed chaos in metals markets by indicating the US would implement a higher-than-expected 50% tariff on copper imports, spurring a record spike in New York futures and a drop in the global benchmark.