Russia’s aircraft production has dropped by 13.5 percent in 2018 following two years of growth because of what experts say is a combined effect of U.S. sanctions and lower demand for warplanes.

The decline in civil and military aircraft, helicopter, spacecraft and intercontinental ballistic missile manufacturing follows a period of annual growth between 9 and 20 percent in 2014-17, according to official data cited by the RBC news website Saturday.