Since taking office, Mr. Trump has raced to enact his economic vision, aiming to pair generous tax cuts with sweeping deregulation that he says will expand America’s economy. He has fashioned his steep, worldwide tariffs as a political cudgel that will raise money, encourage more domestic manufacturing and improve U.S. trade relationships.

Trump’s wild tariff rollercoaster ride is making it tough to do business—and will put a drain on the economy.

Many analysts said Mr. Trump’s announcement was clearly a bid to pressure Europe, a region that he has treated with particular scorn.

U.S. President Donald Trump said on Friday Apple will have to pay a 25% tariff if phones sold in the country are not made within its borders.

North Korea’s newest warship was severely damaged during a launch ceremony Wednesday, with leader Kim Jong Un, who witnessed the accident, saying it brought shame to the nation’s prestige and vowing t...