How well could Iran defend itself against a potential Israeli attack?

Tehran, Iran – Israel has pledged to "exact a price" from Iran in response to missile and drone attacks launched by Tehran in retaliation to the deadly bombing of its consulate in Syria at the beginning of this month. Israel's war cabinet has met several times to debate a course of action to complement a diplomatic push against Iran since Saturday's unprecedented direct attacks on Israel, with Israeli army chief of staff Herzi Halevi saying a military response is certain. Iranian President Raisi threatened a "massive and harsh response" on Wednesday if Israel decides to launch a direct military assault on Iranian soil. So how effectively can Iran defend itself if such an attack occurs? For decades, Iran has increasingly insisted on relying on its local capabilities when it comes to its economy, but a similar push can also be seen in its military sector.