Secretary of State Marco Rubio has slapped sanctions on Chinese companies accused of providing satellite imagery to Iran-intelligence that Washington says was used to target US forces in the Middle East. The move marks a sharp escalation in America's push to cut off Tehran's military technology supply lines.

Additionally, the sanctions target Iran's overseas arms procurement networks and international firms that supplied raw materials for its missile and drone programs. The US is warning of secondary penalties for any entity that defies these measures.

China's Ministry of Commerce responded with a directive, effective May 2, 2026, ordering Chinese firms not to comply with US sanctions on Iranian oil trades. But this goes beyond oil-satellite data provides direct intelligence capability, which US officials say enabled attacks on American personnel.

Meanwhile, tensions around the Strait of Hormuz-through which about 20% of the world's oil passes daily-continue to unsettle energy markets, pushing oil futures higher.

In crypto markets, Bitcoin rose 2.1% to $68,400 in the 24 hours after the announcement. Analysts say stablecoins are increasingly used in sanctioned regions to preserve purchasing power and move value across borders.