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When the UN Partition Plan was adopted by the UN General Assembly back in 1947, Syrian representative to the UN Fares Al Khoury objected, demanding that the matter is taken to the newly established International Court of Justice (ICJ).
The ICJ was founded to adjudicate disputes between nations and offer advisory opinion when asked. It got its first case in May 1947; not about Palestine, but rather, regarding a sea-mine dispute between Great Britain and Albania.
Source: Gulf News