Syria regime, rebels committed war crimes in Aleppo: UN

War crimes were committed by all Syrian sides during the battle for Aleppo, which included chemical weapons attacks, civilian executions and forced displacements following the rebel defeat, a UN probe said Wednesday.The United Nations Commission of Inquiry (COI) for Syria documented the violations in a report covering July 21 to December 22 last year -- the regime's five-month siege of eastern Aleppo, formerly the opposition's key stronghold."The scale of what happened in Aleppo is unprecedented