Tariff threat and oil spike
President Trump threatened 50% tariffs on China after reports of planned arms shipments to Iran, and oil prices climbed past $100 as U.S. moves toward a naval blockade contributed to market strain. The twin trade and energy developments were reported together and framed as immediate macro shocks affecting global markets. ( )
President Donald Trump said on April 13 he would hit China with a 50% tariff if the United States finds Beijing sending air-defense missiles to Iran. (cnbc.com) Trump made the threat in a Fox News phone interview after CNN reported that United States intelligence assessments pointed to a possible Chinese shipment of man-portable air defense systems, or shoulder-fired anti-aircraft missiles, to Iran. Trump said he had seen the reports but did not vouch for them. (cnbc.com) Oil jumped at the same time. United States crude for May delivery rose more than 8% to $104.80 a barrel early April 13, and Brent crude for June gained 7.38% to $102.20, after United States Central Command said it would blockade maritime traffic entering and leaving Iranian ports starting at 10 a.m. Eastern time. (cnbc.com) President Trump said the Navy would interdict ships that paid Iran a toll to pass through the Strait of Hormuz, the narrow waterway that carried about 20% of global oil supplies before the United States and Israel attacked Iran on February 28. Tanker traffic through the strait has already fallen sharply, according to CNBC and The Associated Press. (cnbc.com, apnews.com) The tariff threat did not come out of nowhere. On April 8, Trump said any country supplying military weapons to Iran would face immediate 50% tariffs on goods sold into the United States, with “no exclusions or exemptions,” though he did not name China at the time. (usnews.com) China has denied recent military support for Iran. Reuters reported on April 8 that China and Russia both denied supplying weapons recently, and China’s defense ministry spokesperson Zhang Xiaogang said Beijing had “consistently worked to promote peace talks” and had not taken steps to “fan the flames.” (usnews.com) There is also a legal question around the tariff threat. Politico reported that the Supreme Court in February stripped Trump of his fastest emergency-tariff authority under the International Emergency Economic Powers Act, leaving narrower and slower options that may not fit an Iran-weapons case cleanly. (politico.com) The immediate market shock came from both channels at once: a possible new trade fight with China and a fresh threat to oil flows through the Gulf. By Monday morning, investors were pricing in higher energy costs, weaker risk appetite, and another week of policy driven volatility. (cnbc.com, apnews.com)
