What measures could be taken to halt arms sales to Israel in accordance with the International Court of Justice ruling on the war in Gaza ?

In its interim ruling on South Africa’s genocide case against Israel on January 26, the ICJ stated that Israel is “plausibly” committing genocide in Gaza and ordered it to take “all measures within its power” to prevent acts that could amount to genocide against Palestinians in Gaza. This has spurred humanitarian organisations around the world to pressure their governments to halt sales of arms and military aid.
The ruling “goes beyond Israel” alone, said Raed Jarrar, advocacy director at Washington, DC-based think tank Democracy for the Arab World Now (DAWN). The interim ruling highlights the legal and political obligations of countries to prevent genocide. Advocates say weapons sales and military aid could be deemed to amount to complicity in genocide and be in violation of international law.