Syrian rebels reverted to the tactics of the World War I yesterday when they tunnelled underneath a luxury hotel being used by government troops in Aleppo to plant explosives that destroyed the building.
The Carlton hotel, which was being used as an army base, exploded in a giant mushroom cloud over the country's second city, killing 14 soldiers, according to the British-based Syrian Observatory for Human Rights.
The tunnel, which had seemingly been dug using pickaxes and spades, ran under the front line that divides Aleppo, which has been one of the bloodiest and destructive battlegrounds of Syria's civil war.
Government and rebel forces have been fighting for control of the city for nearly two years.
Syrian state television said that the hotel had been completely levelled by the blast, but did not confirm the number of troops killed.