"Any country that is currently installing first strike missiles on an allies land, targeting your land, is committing a threatening act. And the ally that is participating becomes a valid target. "

I suggest you read up on what the Aegis Ashore system is. It is dual use, ~ It is a capsule-based launcher system that can fire a wide range of missile types, just by switching out the capsules (like a Nespresso machine can make decaf or regular).

It can be turned into a nuclear tipped Tomahawk cruise missile launcher in just a couple of hours with a change in firmware. This would give NATO and the US first strike capability and the ability to decapitate Russian C&C and eliminate their ability to retaliate. It is EXACTLY what was going on in Cuba, but in reverse.