article 5?
here's the un charta..
United Nations charta - chapter 1 - article 2 - paragraph 4
"All Members shall refrain in their international relations from the threat or use of force against the territorial integrity or political independence of any state, or in any other manner inconsistent with the Purposes of the United Nations."
https://www.un.org/en/about-us/un-charter/full-text
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tldr: keep your boots on your own fucking ground.
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