As President Assad was sworn into power for another seven years, rebels in Damascus were were planning an audacious raid on a building near a key crossroads and square in the city centre.
To storm the building they are going underground.
The tunnels they are using were first dug by the Syrian army to counter rebels' own subterranean networks; now they are being used by Islamist fighters to launch a surprise attack.
The rebel group involved is called Ajnad a sham and are one of the main opposition groups in and around the Syrian capital, Damascus.
Using cameras to explore Assad's tunnels, they whisper and move carefully to avoid making noise.
The men speak in whispers unsure if government soldiers are nearby and use night vision cameras to check what’s around each dark corner.
The fighters work in near silence to the target. A ladder is used in a breach of the tunnel and they break through to the surface.
Once they are there the fight starts.
Their ambush is successful. The rebels claim this is their biggest advance in more than a year and the most central position they have secured in Damascus so far.
To gain ground and secure it in the heart of the capital is a significant breakthrough for the rebels: The presidential palace is 6km (3.73 miles) away.
On its own it won’t change the stalemate in Syria, but it does show that -despite President Assad’s claims the uprising is faltering – after three years it is far from over.