Fighting along Syria's northern border intensified Tuesday as the "Islamic State" (ISIS) terrorist group pressed an offensive against a key swathe of rebel territory where thousands of civilians remain trapped, a monitor said, according to AFP.
ISIS swept towards the opposition strongholds of Marea and nearby Azaz in Aleppo province on Friday, forcing thousands of civilians to flee. Rebel groups in Azaz tried to launch a counter-offensive on Tuesday but failed, said the Syrian Observatory for Human Rights.
ISIS blocked the attack with a suicide bomber, killing six rebel fighters,the Britain-based monitor said.