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.

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.

President Donald Trump is waging a trade war without getting approval from Congress: He declared a national emergency to slap import taxes — tariffs — on almost every country on earth