The Syrian rebel commander filmed biting into a dead soldier’s lung has insisted he has no regrets.

The clip, which was verified by Human Rights Watch (HRW), showed Khalid al-Hamad (who is also known as Abu Sakkar) hacking into the man’s body and removing organs before raising the lung to his lips.

He is heard saying: “I swear to God we will eat your hearts and your livers, you soldiers of Bashar the dog,” to offscreen cheering.

Scroll down to see pixellated video (WARNING, GRAPHIC CONTENT)
syrian rebel abu sakkar eats heart

Rebel leader Abu Sakkar takes a bite out of the soldier's lung

HRW described the act as a “war crime” but al-Hamad is unrepentant – and has promised more slaughter.

In an exclusive Skype interview with TIME magazine, he explains his actions: “We opened his cell phone, and I found a clip of a woman and her two daughters fully naked and he was humiliating them, and sticking a stick here and there.”

The magazine also claims al-Hamad was biting into a lung and not, as initially reported, a heart. It says a surgeon has confirmed this.

Sunni al-Hamad revealed he has a further grisly video of himself killing a soldier from the Alawaite faith (which President Bashar Assad follows).

syrian rebel abu sakkar eats heart

'I swear to God we will eat your hearts and your livers, you soldiers of Bashar the dog'

He said: “Hopefully we will slaughter all of them [Alawites]. I have another video clip that I will send to them. In the clip, I am sawing another shabiha [pro-government militiaman] with a saw. The saw we use to cut trees. I sawed him into small pieces and large ones.”

The video comes to light as David Cameron announced Britain is to double military support for Syrian rebels to help them withstand the “onslaught” from Bashar Assad’s regime.

He also suggested Russia could be ready to participate in a peace process, saying there was "real political will" to find a solution.

Cameron was speaking at a White House press conference with Barack Obama on Monday.

SEE ALSO:

The British Prime Minister earlier confirmed nerve agent Sarin appeared to have been used during the two-year civil war.

The Syrian Observatory for Human Rights recorded March as the bloodiest month of the conflict so far, with more than 6,000 people killed, including more than 500 women and children.

So far the Observatory has recorded more than 80,000 deaths but believes the real number of those killed to be much higher. The UN says more than 70,000 people have died since the uprising began in March 2011.

Loading Slideshow...
  • This Friday, March 1, 2013 file citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows a Syrian child, injured by heavy bombing from military warplanes, in the town of Hanano in Aleppo, Syria. (AP Photo/Aleppo Media Center AMC, File)

  • In this Monday, March 4, 2013 file image taken from video obtained from Ugarit News, which has been authenticated based on its contents and other AP reporting, a statue of former Syrian President Hafez Assad is pulled down in a central square in Raqqa, Syria. (AP Photo/Ugarit News via AP video, File)

  • In this Tuesday, March. 5, 2013 file citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows a Syrian man sitting on a fallen statue of former Syrian President Hafez Assad in a central square in Raqqa, Syria. (AP Photo/Aleppo Media Center AMC, File)

  • Smoke rises following an explosion in the Syrian village of Jamlah in the southern province of Daraa, Syria, seen from the Israeli-controlled Golan Heights ,Thursday, March 7, 2013. (AP Photo/Ariel Schalit)

  • This file citizen journalism image taken on, Sunday, March. 10, 2013 and provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, shows Syrians standing next to dead bodies that have been pulled from the river near Aleppo's Bustan al-Qasr neighborhood, Syria. (AP Photo/Aleppo Media Center AMC, File)

  • Syrian rebels aim their weapons as they take position in a building during clashes with regime forces in the Salaheddine district of Aleppo in northern Syria on March 16, 2013. (JM LOPEZ/AFP/Getty Images)

  • Syrian rebels raise their weapons under a pre-Baath Syrian flag currently used by the opposition during an anti-regime protest in the northern city of Aleppo on March 22, 2013. (BULENT KILIC/AFP/Getty Images)

  • The coffins of Sunni Muslim cleric Mohamed Saeed al-Bouti and his grandson Ahmed al-Bouti, who both died in a suicide bomb attack, are carried during their funeral ceremony on March 23, 2013 at the Omayyad mosque in Damascus, Syria. (LOUAI BESHARA/AFP/Getty Images)

  • People mourn during the funeral ceremony of Sunni Muslim cleric Mohamed Saeed al-Bouti, who died in a suicide bomb attack, on March 23, 2013 at the Omayyad mosque in Damascus. (LOUAI BESHARA/AFP/Getty Images)

  • Grand Mufti of Syria Ahmad Badr al-Din Hassoun (L) takes part in the funeral ceremony of Sunni Muslim cleric Mohamed Saeed al-Bouti, who died in a suicide bomb attack, on March 23, 2013 at the Omayyad mosque in Damascus. (LOUAI BESHARA/AFP/Getty Images)

  • People pray in the Omayyad mosque courtyard during the funeral ceremony of Sunni Muslim cleric Mohamed Saeed al-Bouti, who died in a suicide bomb attack, on March 23, 2013 in the Syrian capital Damascus. (LOUAI BESHARA/AFP/Getty Images)

  • A rebel fighter fires towards Syrian government forces positions from a building in Saif al-Dawla district in the northern Syrian city of Aleppo on March 25, 2013. (BULENT KILIC/AFP/Getty Images)

  • A Rebel scouts the positions of Syrian government forces at Saif al-Dawla district in the northern Syrian city of Aleppo on March 23, 2013. (BULENT KILIC/AFP/Getty Images)

  • Rebels clash with Syrian government forces at Saif al-Dawla district in the northern Syrian city of Aleppo on March 23, 2013. (BULENT KILIC/AFP/Getty Images)

  • In this Monday March 25, 2013, citizen journalism image provided by Aleppo Media Center AMC which has been authenticated based on its contents and other AP reporting, anti-Syrian regime protesters burn a portrait for Syrian President Bashar Assad during a protest, in Aleppo, Syria. The Arabic on the poster reads, the dog of Iran." (AP Photo/Aleppo Media Center, AMC)

  • An rebel sniper aims at Syrian government forces positions from a hall in Saif al-Dawla district in the northern Syrian city of Aleppo on March 25, 2013. (BULENT KILIC/AFP/Getty Images)

  • In this Sunday, March 24, 2013 image taken from video obtained from the Ugarit News, which has been authenticated based on its contents and other AP reporting, Free Syrian Army fighters drops a shell into a firing tube, in Damascus countryside, Syria. (AP Photo/Ugarit News via AP video)

  • In this image taken from video obtained from the Ugarit News, which has been authenticated based on its contents and other AP reporting, Free Syrian Army fighters aim their weapons during clashes, in Damascus countryside, Syria on Monday, March 25, 2013. (AP Photo/Ugarit News via AP video)

  • In this Thursday March 28, 2013 image taken from video obtained from the Ugarit News, which has been authenticated based on its contents and other AP reporting, shows a building at the Syrian government checkpoint on fire, in Dael less than 15 kilometers (10 miles) from the Jordanian border in Daraa province, Syria. Thursday, March 28, 2013. (AP Photo/Ugarit News via AP video)

  • In this Thursday March 28, 2013 image taken from video obtained from the Shaam News Network, which has been authenticated based on its contents and other AP reporting, shows fighters from the Syrian Free Army firing on a Syrian army position in Dael less than 15 kilometers (10 miles) from the Jordanian border in Daraa province, Syria. Syrian rebels on Friday captured a strategic town near the border with Jordan after a day of fierce clashes that killed at least 38 people, activists said, as opposition fighters expand their presence in the south, considered a gateway to Damascus.(AP Photo/Shaam News Network via AP video)

  • In this Thursday March 28, 2013 image taken from video obtained from the Shaam News Network, which has been authenticated based on its contents and other AP reporting, shows Syrian Free Army fighters in Dael less than 15 kilometers (10 miles) from the Jordanian border in Daraa province, Syria. (AP Photo/Shaam News Network via AP video)

  • In this image taken from video obtained from the Shaam News Network, which has been authenticated based on its contents and other AP reporting, smoke rises from buildings due to shelling in Damascus, Syria, on Thursday, March 28, 2013. (AP Photo/Shaam News Network via AP video)

  • In this photo released by the Syrian official news agency SANA, plastic tables and chairs turned upside down, are seen on the floor of the open-air cafeteria at Damascus University in the central Baramkeh district, in Damascus, Syria, Thursday, March 28, 2013. (AP Photo/SANA)

  • In this image taken from video obtained from the Shaam News Network, which has been authenticated based on its contents and other AP reporting, a dead body lays on a street due to heavy fighting between Free Syrian Army fighters and government forces in Damascus, Syria, on Thursday, March 28, 2013. (AP Photo/Shaam News Network via AP video)

  • This citizen journalism image provided by The Syrian Revolution which has been authenticated based on its contents and other AP reporting, shows anti-Syrian regime protesters holding a banner and Syrian revolution flags, during a demonstration in the town of Haas in the northwestern province of Idlib, Syria, Friday, March. 29, 2013. The banner in Arabic reads: "We will continue despite killing us. We will continue although we were betrayed. We will continue and God is with us. Good news to those who are patient." (AP Photo/The Syrian Revolution)

  • This citizen journalism image provided by Edlib News Network, ENN, which has been authenticated based on its contents and other AP reporting, shows anti-Syrian regime protesters holding a placard, during a demonstration, in the town of Kafr Nabil, Idlib province, northern Syria, Friday, March. 29, 2013. (AP Photo/Edlib News Network ENN)

  • This citizen journalism image provided by Edlib News Network, ENN, which has been authenticated based on its contents and other AP reporting, shows anti-Syrian regime protesters holding a placard, during a demonstration in the town of Haas in the northwestern province of Idlib, Syria, Friday, March. 29, 2013. (AP Photo/Edlib News Network ENN)

  • This citizen journalism image provided by The Syrian Revolution which has been authenticated based on its contents and other AP reporting, shows anti-Syrian regime protesters holding banners and Syrian revolution flags, during a demonstration in the neighborhood of Bustan Al-Qasr in Aleppo, Syria, Friday, March. 29, 2013. (AP Photo/The Syrian Revolution)