Exclusive: Philippe Sands KC says non-binding opinion will nevertheless be seen as ‘authoritative statement of law’

The UK should stop arming Israel in order to comply with the historic advisory opinion by the UN’s top court that member states should not “render aid or assistance” to the occupation of the Palestinian territories, a lawyer who represented Palestine has said.

In a broad and damning ruling published this month, the international court of justice (ICJ), found that Israel’s settlement policies and occupation of the territories were in breach of international law. It also said UN member states were under an obligation to neither recognise the occupation as lawful nor abet it.