Syrian rebels battled President Bashar al-Assad's forces in and around the northern city of Aleppo on Sunday, seeking to reverse gains made by loyalist forces in the commercial hub over the last two months, activists said. The fighting, by a variety of insurgent groups, happened as France urged moderate rebels to wrest territory back from radical Islamists whose role in the fight to topple Assad poses a dilemma for Western countries concerned that arms shipments could fall into the hands of people it considers terrorists. The 11 Western and Arab countries known as the "Friends of Syria" agreed on Saturday to give urgent military support to the rebels, channelled through the Western-backed Supreme Military Council in a bid to prevent arms getting to Islamist radicals. But radical forces showed they remained formidable on Sunday when the Islamist Ahrar al-Sham brigade detonated a car bomb at a roadblock at an entrance to Aleppo killing at least 12 loyalist soldiers, according to the opposition Aleppo News Network and other activists in the city. Aleppo, 35 kms (20 miles) south of Turkey, has been contested since July last year, when rebel brigades entered the city and captured about half of it. In recent weeks, Assad has focused his military campaign on recapturing rebel-held areas. He has also been expanding control of the central province of Homs after capturing a strategic town on the border with Lebanon, and has used heavy bombardment and siege warfare to contain rebels dug in around the capital, according to opposition sources and diplomats monitoring the conflict. Firas Fuleifel, with the moderate Islamist al-Farouq Brigade, said six rebel fighters were killed in fighting in Aleppo in the last day. http://english.ahram.org.eg/News/74767.aspx