Syrian government and opposition factions say Syrian armed groups have launched a large-scale attack on areas controlled by government forces, setting off fierce clashes for the second day.

Russian forces in Syria are under attack from rebel groups in the Syrian capital, Aleppo, in response to increased strikes.

Syrian rebels in the last opposition enclave in northern Syria launched on Wednesday a wide-scale military operation against the Syrian army and seized territory in the first such advance in years, army and rebel sources said.

In a significant escalation, Syrian opposition factions have launched their largest offensive in years against regime and Iranian forces in the Aleppo countryside, reports Rizik Alabi of The Media Line.

Syrian rebels have launched a large-scale attack on regime forces in western Aleppo, according to a Free Syrian Army source and local residents, marking the first major flare-up in years between both sides.

Russian and Syrian forces have launched airstrikes on northwest Syria to counter a major rebel offensive led by Hayat Tahrir al-Sham near Aleppo

Syria's armed forces continued to confront the large-scale terrorist attack carried out by terrorist organizations in Aleppo and Idleb countryside, a Syrian source reported.

Syrian rebel fighters launched their first major offensive in four years against government positions near Aleppo, claiming to have advanced several miles and captured a string of villages.

Extremist rebels in Syria have overrun an army base and took over at least 13 villages in one of the biggest flare-ups of violence in years in the country's north-east. The rebels launched a surprise attack on the Syrian army in the northern province of Aleppo,

Syrian rebel group Hayat Tahrir al-Sham and its allied factions launched a surprise attack on the Syrian army in the northern province of Aleppo. Violent clashes that followed have killed nearly 60 combatants so far.