The illegality of Israeli settlements in the occupied West Bank is one of the most well-established positions in international law, resting on four distinct pillars:
๐ GENEVA CONVENTIONS
Article 49(6) of the Fourth Geneva Convention (1949) explicitly prohibits an occupying power from transferring parts of its own civilian population into the territory it occupies. Israel ratified the Convention in 1951. The International Committee of the Red Cross, the authoritative interpreter of humanitarian law, has consistently held that this provision applies directly to the settlements.
๐ UN SECURITY COUNCIL RESOLUTIONS
The Security Council has repeatedly affirmed settlement illegality โ including in binding resolutions the US did not veto:
โข Res. 446 (1979): settlements have "no legal validity"
โข Res. 465 (1980): calls on Israel to dismantle existing settlements
โข Res. 2334 (2016): passed 14-0 (US abstained), explicitly states settlements constitute "a flagrant violation of international law" and have "no legal validity"
โ๏ธ ICJ RULINGS
โข Advisory Opinion on the Wall (2004): the Court found settlements in the West Bank, including East Jerusalem, had been established in breach of international law, and that the wall built to protect them compounded that illegality
โข Advisory Opinion on the Occupied Palestinian Territory (2024): the Court went further, ruling that Israel's continued presence in the OPT โ including the settlement enterprise โ is itself unlawful, and called on all states not to recognise or assist it
๐๏ธ UN GENERAL ASSEMBLY
Countless UNGA resolutions have reaffirmed settlement illegality, including Res. 77/247 (2023), which requested the landmark 2024 ICJ opinion.
No serious legal scholar disputes this consensus. The settlements are illegal. The only remaining question is whether the international community will act on it.
Which international law says that they are illegal?