this, syria is the artery through which iranian supplies stock up hezbollah. severing it right now while would be absolutely ideal for the israelis currently fighting them.  of course one could say, maybe the successor government in syria might also just let supplies through if they turn into taliban-isis 2.0, because regardless of being sunni or not they probably wouldn't like israel much more. but the time during which the government is changing and being rebuilt and also the kurds controlling a lot of the border with iraq deciding nothing goes through could change and delay things for a while, stopping the shipments for a couple weeks or months would be very useful for israel at this second.
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