Revision History

The US Embassy in London issued a security alert on April 24, 2026, urging American citizens to exercise increased caution near Jewish and American institutions across the UK and Europe, following a coordinated wave of arson and explosive attacks linked to a shadowy Iran-connected group called HAYI. The advisory arrives amid a sustained surge in antisemitic incidents — the UK recorded 3,700 in 2025 alone, roughly double pre-2023 levels — and raises pointed questions about whether post-Holocaust hate-crime frameworks across Western democracies are functioning as intended.