Bashar al-Assad
Moscow denies the claim.
"The Russians are using scorched earth policy," said one insurgent leader.
WHAT'S HAPPENING
"It's not even a contest."
The Russian defense ministry says it hit a terrorist training camp and a suicide belt factory.
He called Putin's strategy in Syria "a recipe for disaster."
A lesson on relations between the Islamic State and the Syrian president.
NATO says Russia made 'no real effort' to go after ISIS.