For the first time, Al Jazeera has gained access to a frontline view of the stand-off outside Al Raqqa City. Opposition snipers from the Ahrar al-Sham Brigade, a group that has a reputation for some of the fiercest combat fighters in Syria's war, are in the forefront of the fight against the Assad regime. Al-Sham wants an Islamic State in Syria, and share ideology with groups like Al Nusra Front and the Islamic State of Iraq. That puts them in an ideological divide with the Free Syria Army, creating a division that's holding back the revolution. Al Jazeera's Andrew Simmons reports from Al Raqqa.