March 27 saw the culmination of a half-decade of negotiations between Beijing and Tehran, with foreign ministers meeting to sign a twenty-five-year $400 billion strategic and economic partnership. The specifics of the agreement are largely in line with China’s ongoing Belt and Road Initiative (BRI), spending billions in infrastructure investment with an eye on long term influence and economic and security hegemony. Major sectors include oil, gas, petrochemical, renewables, nuclear power, and energy infrastructure. The draft agreement also covered the high-tech and military cooperation, as well as port construction to facilitate Iran’s integration in China’s Belt and Road trade routes.