(Reuters) – Russia expressed “serious concern” on Wednesday to Israel’s ambassador about air strikes that shut down Syria’s Damascus International Airport last week, the foreign ministry said in a statement. Syria has been a staunch ally of Moscow since Russia launched a military campaign in 2015 that helped to turn the tide in a civil war in favour of President Bashar al-Assad. Syria halted flights to and from the airport until further notice following the Israeli strikes. “Serious concern was again expressed over the June 10 Israeli air force attack on the civilian airport of Damascus, which…