China is a longstanding friend of Iran that has helped sustain the Islamic Republic through decades of sanctions and international isolation. Since the U.S. and Israeli militaries began striking Iran late last month, Beijing has offered Tehran limited public support, condemning the killing of the Iranian leadership while calling on all sides to stop fighting. But its longstanding support for Iran could grow increasingly critical as the war continues. Here’s a look at how Beijing has sustained Tehran in recent years. China is Iran’s most important economic partner. Roughly 90% of Iran’s 1.6 million barrels a day of crude oil exports are sold to China, providing Tehran with the equivalent of tens of billions of dollars of revenue each year.

Full report : From buying oil to selling rocket parts, China gives Iran critical support.