"In fact, the US has had to tread very carefully simply to place missiles that are capable of carrying nuclear warheads in Poland, which is a neighbor of Ukrain

"In fact, the US has had to tread very carefully simply to place missiles that are capable of carrying nuclear warheads in Poland, which is a neighbor of Ukraine." This is Russian disinformation. Aegis Ashore (which is the system being installed in Poland) is designed to launched SM3 missiles that are designed to intercept ballistic missiles. They aren't nuclear armed at all. The Russians have been claiming that the silos could also launch Tomahawk missiles, some variants of which are nuclear armed. There have been no plans for this to happen, and the US has even offered to allow inspections.