These various terror groups with different ideological causes and target groups, have included the DHKP-C, TKP/ML, MKP, MLKP, THKO, PKK/PYD/YPG, ASALA, JCAG-ARA, IBDA/C (Hezbollah), FETO/PDY and Daesh (ISIS).
The partial withdrawal of the US's troops from Syria led the PKK/PYD to cooperate with the Assad regime,m an alliance designed to restrain Turkey’s intervention by inviting regime forces to areas of critical importance.
The American stance might be more challenging for Ankara on a wide range of topics such as: the PKK/PYD/YPG, the Syrian Civil War, the Eastern Mediterranean, the Aegean and Cyprus issue, Palestine, refugees, and the currency crisis among other topics.
However, this analysis is hasty and inaccurate due to the following reasons:
The withdrawal of the Euphrates Shield forces from the three locations controlled which they captured from PYD less than 3 hours.
administration since 2013 has been repeatedly undermining Turkey’s national security interests by supporting the PYD-YPG in Syria and currently is threatening in retaliation for Ankara’s decision to move ahead with the purchase of a Russian air missile system.
The third portion of Syria’s civil society organizations operate in YPG controlled areas east of the Euphrates River and are directly affiliated with the Marxist Leninist PYD political wing of the YPG.