Footage from Syria appears to show the extent of Iran's involvement in the conflict-ridden country.

The regime in Tehran says it is assisting Damascus by sending advisers from its elite Revolutionary Guards.

But when some rebels captured a video camera belonging to an Iranian cameraman who had been embedded with the Revolutionary Guards, the scope of Iran's covert activities in Syria became clear.

Yalda Hakim reports. (Footage of Revolutionary Guards courtesy of Nieuwsuur/NOS)