BJJBJ you would need to set up a military , currency etc. same for eu. Plus that would open the door for spain and catalonia. You would be eligible eventually but it would leave a window of opportunity putin would be stupid not to take
I mean its up to scotland to decide, but it would be handing russia a huge W, and i would bet no one from england or wales would rush to defend you if russia did decide to attack , which causes division even more.