The announcement by Jund al-Aqsa came as the differences between Jund al-Aqsa and its rival militant group Ahrar al-Sham intensified and ended up in severe clashes in recent days.
Jund al-Aqsa claimed that its allegiance to Fatah al-Sham is aimed at preventing more clashes with Ahrar al-Sham which is a much larger terrorist group in terms of number.
Hectic efforts earlier to put an end to the disputes and clashes between Ahrar al-Sham and Jund al-Aqsa failed and resulted in unprecedented fighting between the two terrorist groups over the past few days.
Earlier today, two notorious commanders of Ahrar al-Sham were killed in heavy fighting with Jund al-Aqsa terrorists in Northeastern Hama.
Abu Hassan nom de guerre Abu Hassan Dababat and Abu Nazir Tabiyeh were killed in tough battle with Jund al-Aqsa rivals near the small town of al-Talisiyeh.
Elsewhere, Syrian fighter jets bombed positions of Fatah al-Sham Front along a road to al-Jamaleh in Southern Hama, killing at least seven terrorists.
Also on Sunday, the mastermind of Ahrar al-Sham terrorist group's missile attacks on Lattakia villages, Abu Monir al-Dabbous, was killed in Idlib.
Dabbous was killed by Jund al-Aqsa terrorists in a booby trap laid for him and two of his comrades in Hazareen town in Idlib.
After the three were injured in the explosion, Jund al-Aqsa held them captive and sprayed bullets on them.
Dabbous was one of the notorious terrorists who was infamous for attacking the Lattakia villages with hundreds of Grad missiles.
According to field sources, Ahrar al-Sham commanders have lost their morale after Dabbous' death.
Another "moderate" - in Washington's terms - militant group, supported by the US financially and militarily, joined the Fatah al-Sham Front (formerly known as al-Nusra Front) terrorist group on Saturday.
According to the Lebanese al-Safir newspaper, the group named al-Katiba al-Saniya al-Markazia led by Ahmad Qassoum separated from Liwa al-Soghour al-Jabal terrorist group and joined the Fatah al-Sham Front.
The separation happened after Liwa Soghour al-Jabal joined the Idlib Free Army militant group, the daily said.
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