Even if Russia does feel threatened by NATO, as long as being in NATO is the only thing keeping Russia from attacking a neighboring country, it's just going to keep getting new members. They (i.e. Putin) are basically shooting themselves in the foot with all these pre-emptive strikes on potential NATO members.

In other news, seems the war hasn't been going too well for ol' Rootin' Tootin' Putin. Reports of his generals lying to him about their failures to keep from getting Stalin-ed. Troops refusing to attack. Doesn't seem like a winning formula.