[1/5] French police patrol on the Champs Elysees avenue near the Arc de Triomphe in Paris, as the French government puts the nation on its highest state of alert after a deadly knife attack in northern France, October 16, 2023. REUTERS/Gonzalo Fuentes/File Photo Acquire Licensing Rights Summary Security officials see growing risk of Islamist attacks Police resources stretched by tracking other threats Main threat is probably "lone wolves" – security officials LONDON/BERLIN, Nov 24 (Reuters) – European security officials are seeing a growing risk of attacks by Islamists radicalised by the Israel-Hamas war, with the biggest threat likely to come…