article: US-based Human Rights Watch identified the rebel as Abu Sakkar, a well-known insurgent from the city of Homs, and said his actions were a war crime. The main Syrian opposition coalition said he would be put on trial. The video, which cannot be independently authenticated, seems to show him cutting out the heart. "I swear to God we will eat your hearts and your livers, you soldiers of Bashar the dog," the man says, referring to President Bashar al-Assad as he stands over the soldier's corpse. Human Rights Watch (HRW) says Abu Sakkar is the leader of a group called the Independent Omar al-Farouq Brigade, an offshoot of the Free Syrian Army (FSA) Al-Farouq Brigades. He insults Alawites, the minority offshoot of Shia Islam to which Mr Assad belongs. "The desecration and mutilation of a killed person is definitely a war crime," Peter Bouckaert, emergencies director of Human Rights Watch, told the BBC. "This one particularly disturbing because of the sectarian nature of the language used by Abu Sakkar." HRW said those committing war crimes on either side had to know that there was no impunity and that they would be brought to account. The human rights group said Abu Sakkar had been filmed before, firing rockets into Shia areas of Lebanon and posing with the bodies of guerrillas from the Lebanese Hezbollah movement killed fighting alongside Syrian government forces. "Abu Sakkar is a very significant commander - he's in charge of one of the most important battles happening in Syria right now," said Mr Bouckaert. "The danger is that extremists on both sides will feel the need to respond in kind." The video was posted on Sunday, though reporters from Time Magazine said they had first viewed the footage in April. Time said on Tuesday it had spoken to Abu Sakkar, who confirmed that he had bitten into one of the soldier's organs - though a surgeon told the magazine that the organ appeared to be a lung, not the heart or liver, as reported elsewhere. Syria's opposition coalition said the Al-Farouq Brigades were investigating the incident. "The Syrian Coalition strongly condemns this act - if it is revealed to be true," it said in a statement. "The culprit will eventually be tried in court in front of an honest and fair judiciary." It is one of the most gruesome videos to emerge in more than two years of carnage in Syria, says the BBC's Jim Muir in Beirut. The UN says nearly 80,000 people have been killed since the uprising against President Assad began in March 2011, and millions have fled their homes. By Jim MuirBBC News, Beirut The results of many terrible atrocities in Syria have surfaced on internet video clips over the past two years and more. But this one was particularly chilling because it was filmed as it happened, showing an exultantly brazen and barbaric act of gratuitous bloodthirstiness. Even if it was not intended as a provocation, it is likely to have that effect as the struggle between rebel and government forces for control of Quseir
summary: A video which appears to show a Syrian rebel taking a bite from the heart of a dead soldier has been widely condemned.