Syria chemical attack would be 'crime against humanity': Ban
The use of chemical weapons in Syria would constitute a "crime against humanity", adding there was "no time to lose" in investigating an alleged attack which the opposition says killed hundreds.
Rebels seek unity as Syria troops batter Aleppo
Arab foreign ministers have denounced "crimes against humanity" in Syria, calling on the government to stop the violence immediately, as rebel fighters came under fire on multiple fronts.