Two Iranian cargo ships are scheduled to transport a chemical precursor for missile propellant from China to Iran, according to Western security officials. The two ships, the Golbon and the Jairan, will carry more than 1,000 tons of sodium perchlorate for delivery to the Islamic Revolutionary Guard Corps (IRGC) within weeks, according to the officials. Sodium perchlorate is used to produce ammonium perchlorate, which makes up 70% of solid-fuel missile propellant and is controlled by the Missile Technology Control Regime (MTCR). The Chinese Embassy in Washington, DC, said it was not familiar with the report.