1- The sponsors of cease-fire initiative did not pledge to secure the truce.
2-The impossibility of observing the cease-fire by the terrorist groups.
3-Abseance of international observers.
4-The total lack of sincerity amongst the governments supporting terrorist rebels.
5-The failure to demarcate the geographical area of hostilities and subsequent abuse by terrorists .
6-Other rebel groups carried out terrorist operations by feigning to adhere to the al-Nusra Front—which is excluded from the truce agreement.
7-the terrorist groups took advantage from the cease-fire period to restore their military strength.
8-The foreign sponsors of terrorist groups exploited the cease-fire period to further train and equip their mercenaries.
The reasons behind the fall of Khan Tuman by terrorists:
1- The rebels exploited the situation which cease-fire agreement created in Syria.
2- Saudi Arabia and Turkey have recently equipped the terrorist militias with massive contingents of highly advanced weapons, e.g. TOW and Kornet missiles.
3- Turkey and Saudi Arabia also provided the terrorists with complete logistical support.
4- United States and Israel – the two main sponsors of world-wide terrorism– offered their intelligence capabilities, tactical instructions and military trainings to terrorist criminals.
5- A large number of terrorists in other parts of Syria heeded the urgent plea for help by rebels who were seeking to occupy Khan Tuman ,exactly during the period of cease-fire.
6- Nearly 3.000 terrorists that U.S. and few western governments dubbed “moderate opposition groups” took part in the attack to capture the strategic city of Khan Tuman(namely Jaysh al-Islam, Ahrar ash-Sham, Jund al-Aqsa , Faylaq al-Sham ,Harakat Nour al-Din al-Zenki and Jaish al-Fatah).