Travel insurance claim rejected due to “war” (Dubai disruption), how can I fight this?

My travel insurance (ICICI Lombard) rejected my claim saying it was due to a “war situation,” and I’m honestly confused.

My return flight was on 28th Feb, the same day when the UAE had those drone/security issues. Because of that:

• Flight got cancelled

• Had to extend hotel stay

• Extra expenses

But I had booked everything 5 months earlier, so it’s not like I planned travel during a war.

They’re now using the “war exclusion” to deny the claim.

Has anyone dealt with something like this?

Is this actually valid, and can I fight it (IRDAI/ombudsman etc.)?