A general view shows burnt cars at the scene of a powerful car bomb explosion in Damascus on Feb. 21, 2013. The blast killed dozens of people, not to mention causing widespread destruction across the city.
- [Louai Beshara/AFP/Getty Images]

Members of Liwa Hamzah, a newly formed Islamist brigade from the Syrian eastern city of Deir Ezzor, hold flags of Jabhat al-Nusra on Feb. 25, 2013. The United States has deemed al-Nusra a terrorist organization, but it has widespread support among Syria's opposition.
- [Zac Baillie/AFP/Getty Images]

Tusuf Toprakkaya (R) is an Australian national who joined the rebels in Syria. Toprakkaya was deemed a terrorist by the United States and the Syrian government. But among Syrians, he was loved for his willingness to help fight the government of Syrian President Bashar al-Assad. Toprakkaya died in a battle with Syrian forces on Dec. 30.
- [Courtesy/GlobalPost]

Makeshift bombs made by Tusuf Toprakkaya, an Australian national who joined the rebels in Syria. Toprakkaya was deemed a terrorist by the United States and the Syrian government. But among the people he knew in Syria, he was beloved. Toprakkaya died in a battle with Syrian forces on Dec. 30.
- [Tracey Shelton/GlobalPost]

Syrian supporters of the Al-Nusra group wave flags as they march during an anti-regime demonstration in Aleppo on Feb. 8, 2013.
- [Aamir Qureshi/AFP/Getty Images]

Syrian supporters of the Al-Nusra group wave flags as they march during an anti-regime demonstration in Aleppo on Feb. 8, 2013. Aleppo has been wracked by violence since rebels launched an assault on the city in July 2012.
- [Aamir Qureshi/AFP/Getty Images]

The body of a young girl is pulled from the rubble after a government air strike in Aleppo, Syria. Seven more young bodies followed, all aged between 2 and 11.
- [Tracey Shelton/GlobalPost]

Syrian emergency personnel gather next to the scene of an explosion in Aleppo on Jan. 18, 2013. Aleppo, Syria's commercial hub and the country's largest city, has been beset by violence since rebels launched an assault on the city in July 2012.
- [STR/AFP/Getty Images]

Syrian army soldiers discuss their movements as they clash with opposition fighters in Aleppo on Nov. 11, 2012.
- [STR/AFP/Getty Images]

Soldiers in the Syrian military celebrate in the Al-Midan neighborhood of Damascus on July 20, 2012. Syrian regime forces have retaken this area of Damascus after cleaning the district of "terrorists" — a term the Syrian regime uses to describe rebel fighters.
- [LOUAI BESHARA/AFP/Getty Images]

Syrians inspect damages at the site of twin blasts in Damascus on May 10, 2012. With 55 confirmed deaths, this attack marks the biggest death toll since the beginning of the Syrian uprising.
- [Louai Beshara/AFP/Getty Images]

Syrians inspect damages at the site of two powerful blasts in Damascus on May 10, 2012. With 55 confirmed deaths, this attack marks the biggest death toll since the beginning of the Syrian uprising.
- [Louai Beshara/AFP/Getty Images]

A grieving man holds the image of his dead grandson on March 18, 2012, during a funeral in Damascus, Syria, for those killed in two bomb blasts the day before. The Al-Nusra front claimed responsibility for the blasts that killed 27 people the previous day, almost exactly a year after the first anniversary of the Syrian uprising.
- [Louai Beshara/AFP/Getty Images]

Coffins are carried out of a mosque at a funeral service in Damascus, Syria, on March 18, 2012. The Al-Nusra front claimed responsibility for two bomb blasts that killed 27 people the previous day, almost exactly a year after the first anniversary of the Syrian uprising.
- [Louai Beshara/AFP/Getty Images]

Syrian mourners attend a mass funeral in Damascus on Dec. 24, 2011, for 44 people killed in twin suicide bombings the previous day.
- [Louai Beshara/AFP/Getty Images]

Syrian mourners pray in Damascus on Dec. 24, 2011, for the 44 people killed in twin suicide bombings the day before.
- [Louai Beshara/AFP/Getty Images]

Syrian mourners carry a coffin during a mass funeral in Damascus on Dec. 24, 2011. 44 people were killed in twin suicide bombings the previous day, following the arrival of an Arab League delegation that was in Syria to discuss the violence that has overtaken the country.
- [LOUAI BESHARA/AFP/Getty Images]