Trump’s Tariffs by Whim Keep Allies and Markets Off Balance

Investors sent stock prices down on Thursday amid the uncertainty over what President Trump’s inconstancy means for the global economy.

Mexico Gave Trump Much of What He Wanted. Tariffs Came Anyway.

President Claudia Sheinbaum of Mexico took steps sought by President Trump, including sending troops to the border and cracking down on drug cartels. The tariffs went into effect anyway.

C.I.A. Expands Secret Drone Flights Over Mexico

The covert program, begun during the Biden administration and stepped up by President Trump, is hunting for the location of fentanyl labs.