"Now, Syria could be divided into 7 sectors controlled by various parties:
- The Syrian government, backed by its allies – Iran, Hezbollah and Russia, controls the biggest part of the country, including the cities of Aleppo, Hama, Homs, Deir Ezzor, Damascus, Latakia, as-Suwayda and Tartus. However, the militant-held pockets inside the government-held area pose a significant security threat. The situation is especially complicated in Eastern Ghouta and the Yarmouk Refugee Camp. The pockets of Bayt Jinn, Jayrud and Rastan are relatively calm.
- The situation is complicated in Daraa where Hayat Tahrir al-Sham (formerly Jabhat al-Nusra, the Syrian branch of al-Qaeda) and its allies are in control of a part of the provincial capital. The Russia-US de-escalation zone agreement in southern Syria allowed the intensity of fighting there to decrease. Despite this, clashes erupt from time to time in Daraa city and near the Golan Heights. Militants in southern Syria are mostly backed by Jordan, the US and Israel. Tel Aviv often uses tensions in the area to justify its strikes against Syrian forces and describes its support to local militants as a humanitarian assistance to the local population. It is interesting to note that Israel has no problems with the ISIS-linked Khalid ibn al-Walid Army, which operates near its forces. The so-called local armed opposition does not seek to fight ISIS there either.
- The at-Tanf area on the Syrian-Iraqi border is controlled by the US-led coalition and a few US-backed Free Syrian Army (FSA) groups. FSA units are concentrated around the US garrison at at-Tanf and in the nearby refugee camp. The US says that it needs this garrison to fight ISIS while in fact it is just preventing Syria and Iraq from using the Damascus-Baghdad highway as a supply line. US forces respond with airstrikes and shelling to any Syrian Arab Army (SAA) attempts to reach at-Tanf.
- Northeastern Syria, including the cities of Raqqa, Tabqah, Hasakah and a part of Qamishli, is controlled by the US-backed Syrian Democratic Forces (SDF). Kurdish militias YPG and YPJ are a core of the SDF and the Kurdish Democratic Union Party (PYD) de-facto controls this area. A notable number of US military facilities and troops in this area are an important factor contributing to the SDF’s confidence. Some aggressive SDF statements against Damascus can serve as an illustration of this fact.
- Northwestern Syria is also controlled by the SDF. However, the US influence in this area is lower and local Kurdish militias maintain better military relations with the Syrian-Iranian-Russian alliance. They also face more pressure from Turkey and its proxies.
- Turkey and pro-Turkish militant groups control a chunk of the border area, including al-Bab, Azaz and Jarabulus, in northern Syria. Ankara has a strong position there and pro-Turkish militants have repeatedly clashed with SDF members near Tall Rifat.
- Turkish forces are also deployed at the contact line with the SDF in the province of Idlib. However, almost the entire province is still controlled by Hayat Tahrir al-Sham (HTS). This means that Ankara and the terrorist group have reached a kind of agreement over the deployment of the Turkish troops. Ankara actively uses various militant groups to pressure Kurdish forces, which it sees a part of the Kurdistan Workers Party (PKK). The PKK operates in Turkey and northern Iraq and has been seeking for a long time to establish an independent Kurdish state there." SF
This is as good as I can do on an overall summary. pl