Riyadh, Dec. 20, 2021, SPA -- The bilateral exercise (Combat Readiness) between the Royal Saudi Air Defense Forces and the U.S. Air Force has started at King Abdullah Airbase in the Western Sector, it was reported here today. The drill, which began on Friday, aims at enhancing means of joint military cooperation and exchange of expertise between the two sides, the report said. --SPA 21:46 LOCAL TIME 18:46 GMT 0029 www.spa.gov.sa/w1667853