Jihadists battle moderate rebels in northern Syria

By Tom Perry BEIRUT (Reuters) - Heavy fighting erupted in northwestern Syria on Tuesday between a powerful jihadist organisation and more moderate rebel groups, threatening to further weaken the opposition to President Bashar al-Assad in its biggest territorial stronghold. Rebel groups fighting under the Free Syrian Army (FSA) banner, some of which attended peace talks in Kazakhstan, accused the jihadist group Jabhat Fateh al-Sham of launching a surprise attack on their positions. Fateh al-Sham,