Green Party leader Zack Polanski has rejected accusations that he is intimidating British Jews through his call for the Government to monitor UK citizens who have fought for Israel. He is among the signatories of an open letter, sent to Home Secretary Shabana Mahmood and Foreign Secretary Yvette Cooper, urging the "monitoring" of British-Israeli dual nationals who have served in the Israel Defence Forces (IDF) and suggesting they be investigated for "potential links to war crimes". The demand has drawn condemnation from Jewish community representatives, making it a flashpoint in the wider political debate over Israel's conduct in Gaza.

It is estimated that more than 2,000 Britons with dual citizenship have served in the IDF since the Hamas attacks on Israel in October 2023, and the letter calls for such individuals to be tracked on their return to the UK. The Board of Deputies of British Jews condemned the move as "another attempt to demonise Israelis and promote an atmosphere of intimidation against British Jews". Polanski, speaking on BBC Radio 4's Today programme, pushed back and described the Board as "incredibly irresponsible", adding "I say that as a Jewish person" and asserting it was "obvious" that war crimes were being committed by Israel in Gaza.