Hundreds attend the funeral of those killed by two car bombs in Aleppo.<br/> <br />Authorities say Friday's bombings targeting security officers killed at least 28 and was the worst attack on Syria's commercial hub since the beginning of the 11-month uprising.<br/> <br />No one has claimed responsibility, but Bashar al-Assad's embattled government blames the unrest on foreign-backed "terrorists."<br/> <br />In a video released over the weekend, al Qaeda leader Ayman al-Zawahri warns anti-government militia and demonstrators in Syria that they cannot rely on Western or Arab nations to dethrone Assad.<br/> <br />(SOUNDBITE) (Arabic) AL QAEDA LEADER AYMAN AL-ZAWAHRI<br/> <br />"If we want freedom, we must be liberated from this regime. If we want justice, we must retaliate against this regime."<br/> <br />In the meantime, the bombardment on Homs, at the heart of the government crackdown on protesters, paused on Saturday.<br/> <br />Human rights activists claim hundreds have died in the shelling.<br/> <br />Jessica Gray, Reuters
