Rival Islamist Groups Battle Across Idlib Province

Heavy fighting is ongoing between rival Islamist groups in northwestern Syria, say monitors, as reported by Reuters.

Tahrir al-Sham, which includes former Al-Qaida affiliate Nusra Front, attacked positions of Ahrar al-Sham late Tuesday in Idlib province, said the U.K.-based Syrian Observatory for Human Rights on Wednesday.

Ahrar al-Sham is often described as a more moderate Islamist group that is allied with more mainstream rebel factions. It has blamed Tahrir al-Sham for...