An agreed evacuation of rebels and civilians from the devastated Syrian city of Aleppo has been delayed. Busloads of people were due to begin leaving on Wednesday morning as part of a deal with the government, whose forces have effectively taken control of the entire city after weeks of heavy fighting.The Syrian Observatory for Human Rights says; no rebel or civilian has left eastern Aleppo. <br/><br/>Fears have been growing for thousands of trapped civilians as the opposition fighters make a desperate last stand in their remaining pocket of territory in their former stronghold.The UN earlier said that they received reports about pro-government forces executing scores of civilians in Aleppo, including women and children.