The rules for NATO membership didn't change, they were what they always were. 'Expansion' implies that is a goal. It simply isn't. The goal of the book club isn

The rules for NATO membership didn't change, they were what they always were. 'Expansion' implies that is a goal. It simply isn't. The goal of the book club isn't to become large either, it is simply to share an interest in books. Better question is why every single former occupied country wants to sign up. It is not a complicated answer.