Key points to remember:
- Trump told Fox News on April 12 that China would face 50% tariffs if Beijing supplied weapons to Iran during the ceasefire.
- US intelligence reported on April 11 that China could deliver MANPADS to Iran within weeks, threatening low-flying US aircraft.
- The planned summit between Trump and Xi Jinping in Beijing next month adds to the pressure as the Supreme Court limits its IEEPA tariff authority.
US intelligence says China prepares arms shipment to Iran as Trump threatens 50% tariffs
Speaking on Fox News’ “Sunday Morning Futures with Maria Bartiromo” on April 12, Trump address China directly after days of growing intelligence reports. “If we catch them doing this, they will be hit with a 50 percent tariff, which is a staggering amount,” Trump said, adding that he doubted Beijing would follow through on any arms transfers.
The statement came a day after CNN reportedciting U.S. intelligence sources, that China was preparing to deliver new air defense systems to Iran, including shoulder-fired anti-aircraft missiles known as MANPADS. Officials said shipments could be routed through third countries to disguise their origin. If fighting resumes, these weapons could threaten low-flying US aircraft operating in the region.
Trump too announcement a US naval blockade of the Strait of Hormuz on April 12, citing the impasse in peace talks in Islamabad and the need to prevent Iran from replenishing its arsenal weakened by weeks of US and Israeli strikes.
The tariff threat itself dates until April 8when Trump posted on Truth Social hours after agreeing to the two-week ceasefire. “A country supplying military weapons to Iran will immediately be subject to 50% tariffs on all goods sold into the United States of America, effective immediately. There will be no exclusions or exemptions!” The message does not name specific countries, but officials and analysts see it as aimed at China and Russia.
Chinese Ministry of Foreign Affairs denied arms transfer demands. Spokesman Mao Ning said on April 9 that Beijing “has never provided weapons to any party to the conflict” and called for restraint, emphasizing China‘s stated role in negotiating the ceasefire and reopening the Strait of Hormuz.
Reuters previously reported that Iran was close to a deal on Chinese supersonic anti-ship cruise missiles and that Iranian entities received chipmaking equipment from China’s SMIC in March 2026. U.S. officials have repeatedly reported Chinese entities for supplying dual-use goods, including drone components, chemicals and technology that Iran is converting for its missile and drone programs.
Applying a global tariff of 50% leads to legal complications. In February 2026, the United States Supreme Court shrunk presidential authority under the International Emergency Economic Powers Act, the tool Trump relied on for previous global tariffs. Legal experts say alternative mechanisms, including Section 338 of the Tariff Act of 1930, Section 301 and Section 232, remain available but require formal investigations before duties can take effect.
As of April 12, no tariffs had been officially adopted. These declarations have a deterrent effect during the ceasefire period and leverage in advance AssetThe planned visit to Beijing next month to meet President Xi Jinping, a trip delayed by the Iranian conflict.
A 50% tariff on Chinese products, many of which already face existing tariffs, would further disrupt bilateral trade, raise consumer prices for American households and add volatility to oil markets linked to flows from the Strait of Hormuz.
Trump also proposed selling American and American products cheaper. Venezuelan oil to China as an alternative incentive to discourage arms transfers, although no formal offer has been made. The ceasefire lasts until the end of April. Officials say the situation could change quickly depending on Chinese decisions and any new intelligence disclosures.
