ISIS Collapses Opposition Frontline in Northern Aleppo Province
June 3, 2016 - Chris Kozak![](https://understandingwar.org/sites/default/files/styles/thumb-wide/public/Northern%20Aleppo%20Province%2003%20JUN%202016-01_1.png?itok=AlnywRXw)
The Islamic State of Iraq and al-Sham (ISIS) has mounted a major offensive against opposition groups in Northern Aleppo Province, threatening the total collapse of the last pocket of opposition-held terrain along the Syrian-Turkish Border. The looming defeat of the opposition on the Mare'a Line poses a significant risk to the long-term success of the anti-ISIS campaign by foreclosing future partnership with Sunni Arabs in Northern Syria and deepening U.S. overreliance on the Syrian Kurdish YPG