If Iran weren't the major participant in destroying Syria, Iraq and Lebanon, these countries would have had fully established armies that would have prevented Israeli attacks. It's a shame Iran is left alone with no allies because of its long destructive policy in the ME, ironically, they undermined and used those countries as pawns and as an advance line of contact with the enemy to fight on their behalf, yet they themselves were the cause of Iranian downfall.
They plan, and Allah plans, and Allah is the best of planners.