'Next escalation':
The West is “concerned that Iran has lost [Damascus as] its go-to airport in the region for smuggling weapons and is now trying to turn Beirut airport into its new logistics hub, just as they did in Syria,” the source was cited as saying. 

The source further noted that this "could lead to the next escalation."

Recently, the rebel regime in Syria, led by Abu Muhammad al-Julani, announced its decision to prevent Iranians from flying over Syrian skies.