At least 22 militants have been killed in an air strike on an al Qaida-affiliated headquarters in northern Syria, a monitoring group has said.
Syria militants shot down a warplane on Tuesday in an area south of the city of Aleppo where insurgents are battling the Syrian army and allied militias, the Syrian Observatory for Human Rights said.
Any confirmation the rebels now have the missile equipment would be a major escalation in their weaponry.
Two other targets belonging to Al-Nusra and allied jihadist group Jund al-Aqsa in the north of Idlib province were also attacked, Abdel Rahman said, leaving many seriously wounded.
The break has, in fact, allowed Russian Federation and the US-led coalition that has been bombing IS in Syria to concentrate on their fight against the militants.
Last month, Islamist rebels shot down a regime warplane over the village of Kafr Nabuda in the central province of Hama.
Pictures posted online showed rebels speeding to the scene of the crash and surrounding the pilot, who had parachuted to safety.
Al Nusra was also implicated in shelling of the predominantly Kurdish Sheikh Maqsoud neighbourhood in Aleppo on Tuesday.
Civilians carry a piece of a Syrian warplane that was shot down in the Talat al Iss area south of Aleppo Syria
The "cannibalistic" Syrian rebel who was filmed eating a regime soldier's heart and liver has been killed in an ambush along the coast.
A Russian-built fighter jet used by the military of Syrian tyrant Bashar al-Assad has been shot down by al-Qaeda linked terrorists, it has been reported. Sputnik News reported that the source said: "Militants have downed a warplane, which had been on a combat duty in the province of Aleppo".
From Madaya, near Damascus, Abu Firas worked with al-Qaida leader Osama bin Laden in galvanizing support among Pakistani supporters of the fundamentalist Taliban movement in Afghanistan several decades ago, the rebel sources said.
Syria's partial cease-fire appeared to be unraveling on Saturday amid fierce fighting between government forces and opposition fighters, including members of the al-Qaeda affiliated Nusra Front.
Warring parties have repeatedly flagged alleged violations, which still are committed daily, especially by government forces, analysts and Syrian rebels say.
Syria's government delegation is expected to arrive on April 14.
The Syrian military and its allies have continued to launch attacks against them in areas they are said to occupy.