Syria crisis: Rebels 'post killing video'
2 November 2012 Last updated at 10:22 GMT
Amnesty International has condemned what appears to be the shooting dead of Syrian government soldiers by rebel fighters in a video posted online.
The human rights group said that the killings on Thursday - if confirmed - constituted a "war crime".
The BBC's Jim Muir says "the conflict is getting more vicious and more violent by the day".