Good job in this thread for detailing the proper belief of Muslims regarding war.
A Muslim who joins a Kaffir army to wage war on another Muslim becomes a Kaffir according to Islamic fiqh. There are no ifs and or buts about it.
If that Muslim joins and supports a Kaffir army invading and occupying a Muslim land brutally (as Kashmir or Palestine,) he becomes a Kaffir as well.
These things take one out of Islam.
As I have detailed in another thread, the kind of 'Muslims' which BJP, RSS, Bajrang Dal, and Shiv Sena promote like Dr. Abdul Kalam are actually Hindus. They are worshipers of idols and followers of Sanatan Dharma.
Worshiping any idol takes one immediately out of Islam, even to please or show respect in a misguided way. You have to renew your shahadah and promise Allah swt not to do it again.
Anything to defend your illegal theft and occupation of a 95% Muslim majority land. Shame on you.
We are watching how you are treating Kashmiris and shaking our heads in shame. Don't act self-righteous.
First tell me, does your formula apply to KSA too? Because they sided with America against another Muslim country during gulf war.