Idlib is held by an array of rebels. The most powerful is Tahrir al-Sham, an amalgamation of Islamist groups dominated by the former Nusra Front - an al Qaeda affiliate until 2016.
UN commission calls on rebels to leave urban areas in Syria's Idlib to protect civilians from regime assault
UN agencies and relief organisations have warned repeatedly that any major assault on the province of Idlib, which borders Turkey, could spark one of the worst humanitarian disasters of Syria's seven-year war.
Russia to brief United Nations Security Council on the 'major humanitarian catastrophe' in Syria's Idlib
Russia will brief the United Nations Security Council on Tuesday about the results of the Tehran summit it held with Iran and Turkey on the fate of Syria's Idlib province, diplomats said.
Large-scale offensive in Syria's Idlib province could spark worst catastrophe of 21st century, says UN
The UN statement comes as Syrian troops, backed by Russia and Iran, surrounded Syria's Idlib province ahead of an expected onslaught against the largest rebel-held zone left in the country.
'Violent' Russian airstrikes hit Syria's Idlib after Tehran summit failure; aid bodies warn of humanitarian disaster
At least four civilians were killed in the strikes in Idlib province in Syria as dozens of barrel bombs were dropped by regime aircraft.
Syria government has right to 'take control of all its territory', says Russian president Vladimir Putin
The Russian leader said it was important to begin work on a political settlement in Syria "as soon as possible" and urged Iran and Turkey to ramp up their coordination with Russia of their countries' foreign and defence ministries and security services.
Kremlin says Syrian army 'getting ready to solve terrorism problem' in Idlib, does not provide timeframe for offensive
Idlib is held by a complex array of rebels and jihadists, many of whom have been blacklisted as "terrorists" by world powers. Syrian government forces are now massing around the northwestern province in preparation for the assault.
In video shared online, Syria al Qaeda leader Abu Mohammed al-Golani vows to continue fight in Idlib province
His comments came as Syria government forces have been sending reinforcements into Idlib, in the country's northwest along the border with Turkey.
Toll in arms depot explosion in Syria's Idlib rises to 69; monitor says most casualties civilians, including 17 children
Most of the civilians killed in the blast in Syria's Idlib province were family members of Hayat Tahrir al-Sham fighters displaced to the area from the central province of Homs.
An explosion at a weapons depot in northwest Syria's Idlib province killed at least 39 civilians including children
UN secretary-general Antonio Guterres calls for investigation into Syrian air strikes allegedly carried out by Russia
UN Secretary-General Antonio Guterres has called for an investigation into the air strikes in Syria on 7 June. The attacks are believed to be carried out by Russia
French Foreign Minister Jean-Yves Le Drian warned on Sunday that a new humanitarian disaster was looming in Syria, in the rebel-held region of Idlib,
Syria conflict: More than 1,000 civilians dead in Eastern Ghouta since 18 Feb; govt forces isolate rebel town Duoma
Syrian regime forces continued their offensive against Eastern Ghouta on Sunday, a day after they cut off the rebel-held enclave's largest town.
Around 600 civilians have been killed in the Syrian military's offensive to recapture the region adjacent to the capital, Damascus
Syrian regime retakes over quarter of rebel-held Eastern Ghouta enclave as civilians flee from bloodshed
Syria's regime has seized control of over a quarter of rebel-held Eastern Ghouta on the edge of Damascus after two weeks of devastating bombardment, sending hundreds of civilians into flight
Fresh regime strikes on a besieged rebel-held enclave near Damascus in Syria killed close to 70 civilians despite mounting Western pressure on Syrian president Bashar al-Assad
Syria conducts air strikes on rebel-held enclave in Damascus, kills 70 civilians, including 18 children
Fresh regime strikes on a besieged rebel-held enclave near Damascus killed close to 70 civilians on Tuesday despite mounting Western pressure on Syrian president Bashar al-Assad
Syrian rebels shoot down Russian warplane in Idlib, kill pilot; Al-Qaeda claims responsibility for attack
Syrian rebels shot down a Russian warplane and killed its pilot on the ground after he ejected from the plane, Russia’s defence ministry and Syrian rebels said
Syrian government forces have entered small parts of the northwestern rebel-held province of Idlib in one of their deepest incursions into the area where President Bashar Assad's government almost has no presence.
An Al-Qaeda-linked insurgent coalition known as the Levant Liberation Committee has consolidated its control over Idlib.