Sirens fill smoke covered streets in Aleppo.br br Amateur video, which can not be independently verified by Reuters, appears to show confusion in the aftermath of a government strike.br br Aleppo, once the commercial hub of the country, is split apart between opposition groups in the east and government forces in the west.br br Hidden in the fog of war -- a man clings to a wounded child.br br As government forces try to cut off supply routes, rebels fight back.br br Almost 200,000 people in Syria have been killed in more than three years of war -- with few signs of anyone putting down arms.