He specialises in the Middle East and related affairs, geo-strategic risk and modern terrorism. He advises, consults and lectures to numerous private bodies, companies, business groups, and  national security agencies across the globe, and is a Lecturer in Near and Middle-Eastern Politics at New York University in London. He also serves on the London First Security & Policing Advisory Board and the Global Risk Network Executive Advisory Committee. A regular guest on numerous national and international TV channels and radio stations, Hagai also writes for a number of newspapers and publications around the world.