International law and Israeli settlements
Source:
Wikipedia
United Nations
In 1979 and 1980, numerous UN Security council resolutions, including 446, 452, 465, 471 and 476, considered the settlements as having "no legal validity" under the Fourth Geneva Convention. In 2004, an advisory opinion by the primary judicial organ of the UN, the International Court of Justice, also found the settlements to be illegal under international law. The court's finding was based on the provisions of the Fourth Geneva Convention and UN Security Council resolutions that condemned the establishment of settlements and attempts by Israel to alter the demographics of the territories under its control. The United Nations General Assembly, which regards itself as having a chief role in the process of the codification of international law, has passed several resolutions with an overwhelming majority that denounce settlements as being illegal. The United Nations Human Rights Council has also called the Israeli settlements and related activities a violation of international law.
According to records of the 1998 meeting of Committee on the Elimination of Racial Discrimination, Theo van Boven said
The status of the settlements was clearly inconsistent with Article 3 of the Convention, which, as noted in the Committee's General Recommendation XIX, prohibited all forms of racial segregation in all countries. There is a consensus among publicists that the prohibition of racial discrimination, irrespective of territories, is an imperative norm of international law.
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https://en.wikipedia.org/wiki/International_law_and_Israeli_settlements#United_Nations