Hezbollah is a creature of the Persians not the Arabs.
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With what we know of our entire history of terrorism sourced from the Middle East, I would not bet on that as an absolute.
I know that they have that the enemy of my enemy" thing going on but I would imagine that Iran does not have a seat at the Arab meeting. The Saudis and other Sunni Arabs may back Lebanon but not the Iranian backed Hezbollah.