US stocks slid Thursday and the S&P 500 closed in correction, down more than 10% from its record high in February, as President Donald Trump threatened new tariffs on the European Union.

But uncertainty around Trump's tariff policy continues to grip Wall Street, and his trade war has only intensified this week. The president has vowed to respond to tariffs planned by the EU and Canada in response to US duties on steel and aluminum imports — most notably leading off Thursday by threatening a 200% tariff on imports of EU wines and spirits.