The Hephthalites were a relatively powerful nation if you mean it militarily. They were in control of a powerful state and used to conduct raids in to the Indian subcontinent and the Iranian plateau regularly.
The Sassanids by this point were really dwindling and I don't think they had it in them to take on the Hephthalites. I mean Emperor Kavadh I actually had to use Hephthalite aid to rebel and place himself on the throne.
The Hephthalites were a relatively powerful nation if you mean it militarily. They were in control of a powerful state and used to conduct raids in to the Indian subcontinent and the Iranian plateau regularly.
The Sassanids by this point were really dwindling and I don't think they had it in them to take on the Hephthalites. I mean Emperor Kavadh I actually had to use Hephthalite aid to rebel and place himself on the throne.