Syrian air force jets bombed the rebel-held town of Al-Bab in northern Syria on Monday, killing at least 18 people, according to Syrian activists.
Over the summer, the rebels gained control of a number of towns and villages along the Syrian-Turkish border. Now, those places are being bombarded from the air and from the ground by government forces.
Azaz, in northern Syria's Aleppo province, is one of these places. There, the tombstones in the old section of the town's cemetery are laid out in neat rows.
The conflict in Syria is now nearly a year and a half old, and there appears to be no end in sight.
August was the deadliest month yet, with thousands of people, mostly civilians, killed in fighting around the country. While anti-government rebels are making advances, government troops are digging in their heels.
It started as a protest movement. Now, analysts in the U.S. and the region agree, the conflict in Syria is a civil war.
A Civil War
Even Syrian President Bashar Assad came close to acknowledging as much in a speech last week.