AI Jitters and Geopolitical Threats Mark Start of Busy Week in Markets

Chip makers and other tech stocks weighed on major U.S. indexes.

Trump Threatens 50% Tariff on Vehicles and Parts From Canada

The move, which would take effect in January, is the latest in the rapidly escalating trade war between the two neighbors.

Bessent Launches 'Operation Economic Outcast' to Isolate and Squeeze Iran