Two US senators said Syria's air defence system isn't as strong as was once thought and add that recent air strikes show the regime is vulnerable.
Former Republican presidential candidate Senator John McCain and Democratic Senator Patrick Leahy said today that Syrian President Bashar al-Assad's air defence systems were not impenetrable.
In recent days reported air strikes launched by Israel targeted a shipment of advanced missiles believed to be headed for the Lebanese militant group Hezbollah.
Speaking on Fox News Sunday, McCain said Syria had crossed another "red line" in transferring weapons to US aggressors, but he does not believe US ground forces should go into Syria to secure the weapons.
Leahy spoke to NBC's "Meet the Press".
More top news
From route to race day tactics, these are some of the most googled questions ahead of Sunday’s race.
Resham Khan and Jameel Muhktar received horrific injuries to their faces and bodies in the attack on Ms Khan’s 21st birthday.
The 53-member body agreed that Prince Charles should succeed the Queen as the next commonwealth head.