Russian envoy to Lebanon: We'll return fire for any U.S. launch on Syria
Senior diplomat ups the stakes after Washington and Moscow clash at the UN.
Russian President Vladimir Putin (R) and Syrian President Bashar al-Assad visit the Hmeymim air base in Latakia Province, Syria December 11, 2017(photo credit: SPUTNIK/MIKHAIL KLIMENTYEV/ VIA REUTERS)Updated: 
