On 19 September, the Syrian military attacked positions held by HTS and its allies, in the Hama-Latakia-Idlib axis, stating that it has still not withdrawn its troops from the area. On 20 September, Hay'at Tahrir al-Sham reportedly executed an individual who was reportedly supportive of reconciliation with the Syrian Government. Turkish officials and officials from Hay'at Tahrir al-Sham (HTS) since the inception of the deal have been discussing a course of action to be taken in Idlib in line with the deal's guidelines. Reportedly the most urgent topic of the discussions is the uncertain fate of foreign fighters within HTS, with HTS proposing that the group dissolves and become part of an umbrella of other groups, while foreign fighters along with the group's leader
Abu Mohammad al-Julani be allowed safety, discussions have been inconclusive in this regard but satisfactory in other aspects with many elements of HTS welcoming much of the Sochi agreement. While pro-government forces reportedly attacked opposition forces positioned in
Turkmen Mountain in the
Latakia Governorate which is reportedly a part of the agreed demilitarized zone, which caused several fires in the area, the government also targeted other areas of the Latakia Mountains including Jabal Al-Akrad and Kabani. Government targeting also hit areas in the
Idlib Governorate including the Qoqfeen area in the western countryside of the province. The areas in the
Hama Governorate were also reportedly hit including the town of al-Sermaniyyeh in the
al-Ghab plain, opposition factions responded by shelling government-held areas in the northern countryside of the Hama governorate in the towns of Joureen and Foro. Later at night on the same day multiple rebels including the
Nour al-Din al-Zenki Movement reportedly shelled Pro-Government positions in the western parts of
Aleppo targeting the Mokambo and Al-Andalus districts of the city. In response to the attack the Syrian military fired missiles into the Rashideen 4 area held by the Syrian opposition. On 1 October, machine gun fire was reportedly emanating from pro-government forces in the rebel-held Lirmoun area of the northwestern outskirts of Aleppo, along with continued shelling on behalf of pro-government forces after shelling from the previous night. On 2 October, Hay'at Tahrir al-Sham (HTS) and Turkish officials reportedly reached an agreement where agrees to withdraw fighters and heavy weapons from the established demilitarized zone, as well as a dissolution of the
Syrian Salvation Government and its administration became integrated with the
Syrian Interim Government and that HTS restructures so it will no longer be designated a terrorist organization by Turkey, and Turkey in turn agrees not to take action against the group and its members and leadership will be given safety. On 26 October, pro-government shelling in the Idlib Governorate killed seven, reportedly being the largest loss of life since August 2018. On 16 February,
SOHR reported that at least 18 people were killed and many more injured after sporadic Syrian government shelling on
Maarrat al-Nu'man,
Khan Shaykhun,
Hama and surrounding settlements in the rebel-held Idlib region within the past two days. Rebels responded with machine gun and rocket fire towards SAA positions.
Failure of the deal The deal's terms were never implemented fully. Hay'at Tahrir al-Sham (HTS) never left the demilitarized zone and, to the contrary, launched a
full-scale offensive against the other rebel groups remaining within the rebel-held
Idlib Governorate. After 10 days of fighting, the National Front for Liberation (at that point the second largest and most powerful rebel group in Idlib, after HTS) signed a peace deal with the group, which allowed HTS to take over almost the entirety of the Idlib governorate, leaving only small and minor pockets under the control of the other rebel groups. The HTS-run
Syrian Salvation Government was not dissolved but instead expanded its control to all of the areas recently captured by HTS, including those within the demilitarized zone. The presence of HTS forces along the demarcation line led to frequent exchanges of artillery shelling with government forces, which significantly undermined any chances for a true cesassion of violence. The M4 and
M5 highways were never reopened by rebel forces and even the groups deemed 'moderate' by the deal never withdrew all heavy and medium weapons from the demilitarized zone. The provision for joint Turkish-Russian patrols within the DMZ was also not enforced, as the rebel groups categorically refused the entry of any Russian soldiers or
military police to their controlled areas, allowing only Turkish forces to do so. The rebel's refusal reportedly came after Turkey reportedly 'promised' them that it would not allow any Russian presence within the DMZ. The deadline for the fulfilment of the deal's conditions was extended multiple times to allow
Turkey more time to convince the rebel groups to adhere to the terms, but all such attempts were unsuccessful.
Renewed fighting On 6 May, after six continuous days of intensive airstrikes on the region by the
SyAAF and
RuAF, the
Syrian Arab Army launched a ground offensive against
HTS and
NFL-held areas in northern
Hama and southern
Idlib. The
Syrian Government stated that the assault was provoked by increased rebel attacks on government-held areas originating from within the demilitarized zone. The Russian government stated that the deal was not implemented by the rebel groups, hence justifying military action against them. The Idlib-based rebel groups stated that the goal of the offensive would be to capture the M4 and M5 highways in the
Idlib Governorate.
Attempted revival of the deal On 1 August 2019, following several months of intense fighting between government and rebel forces, the Syrian Government announced a unilateral truce, conditional on rebels' fulfilment of the original 2018 demilitarisation terms. Most rebel groups reportedly accepted the offer. Shortly after the truce went into effect, however,
Hay'at Tahrir al-Sham declared that they would categorically refuse to leave any region under their control at that time, which was a core demand of both the original agreement and the conditional ceasefire. A day later, the government announced the end of the ceasefire and a resumption of military operations, citing the refusal of rebel groups to withdraw from the zone as the reason for the truce's failure. A considerable portion of the DMZ's territory was subsequently captured by the
Syrian Army and its allies during the
final stages of the offensive. Another ceasefire was announced in late August, which confirmed the government gains. Some rebel groups on the other hand, expressed their refusal to adhere to the deal and withdraw from the remaining 'demilitarized' areas, hence signaling that the agreement would not be revived. The
subsequent 2019-2020 Northwestern Syria offensive saw large parts of the originally designated zone being captured by the
Syrian Army. In mid February 2020 the Syrian Army regained control of the
M5 Motorway. On 5 March 2020, Russia and Turkey came to a new cease-fire agreement, which included joint Russian and Turkish patrols of a wide corridor alongside the
M4 Motorway that runs through Idlib to
Latakia. == Conflict parties ==