Shares tumbled in Europe and Asia and U.S. futures tumbled Thursday following U.S. President Donald Trump ’s announcement of big increases in tariffs on imports of goods from around the world.

In Asia, Trump’s new tariffs mean jittery investors and uncertainty, AP explains

Shares tumbled in Europe and Asia and U.S. futures tumbled Thursday following U.S. President Donald Trump ’s announcement of big increases in tariffs on imports of goods from around the world.