The Parties undertake, as set forth in the Charter of the United Nations, to settle any international dispute in which they may be involved by peaceful means in such a manner that international peace and security and justice are not endangered, and to refrain in their international relations from the threat or use of force in any manner inconsistent with the purposes of the United Nations.
I am talking about Nato not the UN
That is NATO.
My bad. Still nothing in the article 1 mention that a members can be kicked out
There’s no kicking-out part, no, it didn’t occur to them apparently.