It’s all done on a case-by-case basis. Joining NATO isn’t like Civ’s “your armies can travel in my territories” negotiation perk that applies to all of NATO. It needs to be a bilateral agreement. NATO is a mutual defense alliance, but it is absolutely not intended to undermine any member’s sovereignty.
Germany and other countries have soldiers stationed in Lithuania on a NATO initiative. Where‘s the difference?
It’s all done on a case-by-case basis. Joining NATO isn’t like Civ’s “your armies can travel in my territories” negotiation perk that applies to all of NATO. It needs to be a bilateral agreement. NATO is a mutual defense alliance, but it is absolutely not intended to undermine any member’s sovereignty.