The intense bombardment has claimed nearly 100 lives since Monday morning, with a field hospital being struck by shells.
Today the regime vowed it will continue to pursue the “terrorists” who are “threatening” citizens in Homs.
Meanwhile today Russian foreign minster Sergei Lavrov arrived in Damascus for talks with Mr Assad.
The army is targetting areas of Homs where rebels from the Free Syrian Army have a strong presence, notably the district of Baba Amr.
Hundreds of shells and mortar bombs were reported to be falling every hour, while the insurgents were unable to retaliate with anything more effective than small arms fire.