What difference between Isis Islamic state and Iranian Islamic Republic?

What difference between Isis Islamic state and Iranian Islamic Republic?
If you really want to know there is no difference between iran and isis, they are muslims, those guys who did the terrorist attacks in Iran trained by the Iranian regime khomeini is the greatest isis father.
But I want to say a thing Iranian regime was aware of the event that the Iranian regime would play in order to reduce American threats to the Iranian regime.
It's Iranian strategy to be able to play any role in reducing threats to the regime.