India, Jan. 13 -- WASHINGTON, D.C., January 13 - President Donald Trump escalated global economic pressure on Iran, announcing the United States will impose an immediate 25% tariff on any country that conducts business with the Islamic Republic. The sweeping order, delivered via Truth Social, offers no details on enforcement or exemptions and risks upsetting major U.S. trading relationships worldwide.

In a Monday post on Truth Social, President Trump declared that any country doing business with Iran will be subject to a 25% tariff "on any and all business being done with the United States of America." He stated the order is "final and conclusive" and "effective immediately." The policy is designed to economically isolate Tehran amid a v...