Some minor gains made by the Syrians. They have been probing the area south of the M4, no air support involved, just artillery. They also sent some units back to Deir Ez-Zur from Idlib. The probing has been ongoing sense the start of the ceasefire but never gained ground before now.
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It's hard to say, as they may just be fighting HTS who never were officially a part of it anyway. It's also been relatively minor so far.