President Trump on Friday revived his trade war, threatening to slap hefty tariffs on the European Union (E.U.) and to hit Apple with tariffs if it doesn’t manufacture in the United States. His ...

Technology relies heavily on global supply chains, which makes it particularly susceptible to trade policy disruptions.

U.S. President Donald Trump's tariff decisions since he took office on January 20 have shocked financial markets and sent a wave of uncertainty through the global economy.