Harakat Nour al-Din al-Zenki fighters look out inside a damaged building in Handarat area, north of Aleppo Syria April 19, 2016. REUTERS/Abdalrhman Ismail
GENEVA (Reuters) - The United Nations expressed deep worry on Wednesday over the fate of more than 40,000 Syrians who have fled fighting near the northern city of Aleppo that has escalated in recent days as government forces press an offensive despite a truce.
Fighting around Aleppo has become the biggest threat to the fragile cessation of hostilities that went into force on Feb. 27, and has contributed to the decision by the main opposition delegation to suspend its formal participation in peace talks.
