US President Donald Trump has surprised many by doubling tariffs on steel and aluminium from 25% to 50%, effective Wednesday. The hike comes amid ongoing trade talks with several countries, sparking concerns of a renewed trade war.

Trump previously hinted at the move during a visit to a Pennsylvania plant. The White House confirmed the decision, warning it could strain ties with trade partners. The EU has already threatened retaliation. Markets reacted negatively, and global tensions may rise as countries respond to the unexpected hike.