1940, and currently in force since 1948, provides in its Article Il: Finland undertakes to demilitarize the Aaland Islands, not to fortify them and not to “make them available to the armed forces of any other State. This provision shall be deemed to mean that neither Finland nor any other Power shall establish or maintain in the Aaland Islands region any military or naval establishment or operational base, any establishment or opera- tional base for military aviation, or any other installation which might be used for military purposes. The existing gun-platforms shall be demolished.2/ The propesals embodied in Points One and Two are fully consistent with the United Nations Charter. The Charter not only prohibits the threat or use cf force against the territorial integrity or political independence of any State (Art. 2(4)); it expressly recognizes the inherent right of individual or collective self-defense 2. (Art. 51). Given that the provisions implementing Foints One and Two would be valid under international law, to determine their legal effects. Of course, it remains the legal regime created by those implementing provisions would be, primarily, that which they themselves establish.2” The question is, 2/ 67 U.N.T.S., No. 872, p. 146. This agreement came into force again as from March 13, 1948, pursuant to a notification given to Finland by the Soviet Union in accordance with Article 12 of the Treaty of Peace with Finland. Whiteman, Digest of International Law, 3/ See Article 26 vol. II, p. 1206. (pacta sunt servanda) of the Vienna Conven- tion on The Law of Treaties, adopted on May 29, 1969, entered (footnote cont'd)