Syrian government troops widen their offensive against opposition strongholds throughout the country, using heavy weaponry.
This image from amateur video purports to show Syrian forces in Homs, February 16, 2012. (AP/Shaam)
This citizen journalism image provided by the Local Coordination Committees in Syria shows a Homs neighborhood hit by government shelling on February 15, 2012. (AP)
An anti-Syrian regime activist in front of flames and black smoke from a bombed oil pipeline in Homs, February 15, 2012. (AP/Local Coordination Committees)
Syrian government-organized media tour, February 15, 2012, shows an armored personnel carrier in the Damascus suburb Harasta that saw heavy fighting earlier this year. (AP)