Long-threatened tariffs from U.S. President Donald Trump have plunged the country into trade wars abroad — all while on-again, off-again new levies continue to escalate uncertainty. Trump launched a trade war during his first term as well,

U.S. President Donald Trump's tariff decisions since he took office on January 20, from imposing sweeping duties to abruptly pausing some of them, have shocked financial markets and sent a wave of uncertainty through the global economy.