China, Iran and the opening

China has backed Iran diplomatically through the 2026 war, but public evidence of direct Chinese military intervention remains thin. (mfa.gov.cn) Since United States and Israeli strikes on Iran began on February 28, 2026, Beijing has condemned the attacks at the United Nations and in repeated foreign ministry briefings, calling for a ceasefire and negotiations. China’s special envoy Zhai Jun met Iran’s ambassador in Beijing on March 20, and Foreign Minister Wang Yi repeated China’s call to “stop fighting” on March 8. (mfa.gov.cn 1) (mfa.gov.cn 2) (mfa.gov.cn 3) The harder claim — that China has strengthened Iran’s air defenses during the conflict — has circulated in television segments and commentary, but the sources available here do not provide verified official evidence for a new transfer. Reporting and analysis have instead focused on possible Chinese technical help, including allegations that Iran may be using the BeiDou satellite navigation system, which has not been publicly confirmed by Beijing. (timesofindia.indiatimes.com) (aljazeera.com) What is documented is the economic spine of the relationship. A United States-China Economic and Security Review Commission fact sheet published in March 2026 said Chinese purchases account for roughly 90 percent of Iran’s exported oil, and the two countries’ 25-year strategic partnership dates to March 27, 2021. (uscc.gov) (english.alarabiya.net) Ship-tracking data cited across recent coverage shows why Beijing is watching the war so closely. Kpler data for 2025 put China’s purchases of Iranian oil at about 1.38 million barrels a day, or more than 80 percent of Iran’s shipped oil, and Reuters-based coverage in March said Iranian crude was still moving to China through the Strait of Hormuz despite the fighting. (uscc.gov) (cnbc.com) That makes the conflict part of a larger United States-China contest even without a proven weapons airlift. Washington has already sanctioned China- and Hong Kong-based entities for supporting Iran’s ballistic missile and unmanned aerial vehicle procurement networks, including actions announced on April 1, 2025, and May 14, 2025. (state.gov 1) (state.gov 2) Analysts are split on how far Beijing will go. Some argue China can use United States military distraction to widen its influence in the Gulf, while others say Beijing’s actual behavior has been cautious, with no sign of direct combat involvement and a strong preference for keeping oil flowing and avoiding a wider regional rupture. (youtube.com) (isdp.eu) The opening, for now, is less about Chinese missiles than Chinese leverage. As long as Beijing remains Iran’s main oil customer and a diplomatic backer at the United Nations, every escalation around Tehran also lands inside the wider struggle over United States power, sanctions and influence. (uscc.gov) (mfa.gov.cn)