The failed experience of Sudanese mercenaries waiting for terrorists in the Golan.
"Sadullah Zarai", an expert on issues in West Asia, said in an interview with the Hagana press: "Saudi Arabia cannot compensate for the weakness of its army against Yemen's Ansarullah through proxy forces."
The Saudis are following up on a failed experiment. They don't have a strong and effective army and they want to solve this problem by using intermediary and proxy forces, hiring mercenaries and paying money.
At one point the Saudis went to the Sudanese against the Ansarullah of Yemen, and more than 30,000 of the Sudanese forces engaged with the Ansarullah of Yemen in the form of irregular wars under the command of the Saudi army. A large part of these forces were killed and eventually most of them returned to Sudan.
The Syrians who are talked about or sometimes elements from Afghanistan who are mentioned, are nothing more than Sudanese mercenaries and cannot change the scene of the war in favor of Saudi Arabia; So it's a trial in a dark tunnel and there seems to be no light on the horizon.