Well duh, it’s a defensive alliance.

Tell that to the people of yugoslavia in 1999

Or Bosnia in 95

Nato intervened when Serbian forces committed genocide against the Bosnians.
en.wikipedia.org/wiki/Bosnian_War

the July 1995 Srebrenica massacre later became iconic of the conflict. The massacre of over 8,000 Bosniak males by Serb forces

That’s when NATO decided to intervene.

How come the one conflict where NATO was in the right and defended an ethnic Muslim minority is what people chose to die arguing against