The organization Harakat Ashab al-Yamin al-Islamiya (The Islamic Companions of the Right Hand) claimed responsibility for the stabbings of two Jewish men in London’s Golders Green neighborhood on April 29. This group, referred to by its initials “HAYI” in the UK, has recently come onto the radar of law enforcement and intelligence agencies across Europe, after it claimed to have carried out a series of attacks on Jewish and Iranian opposition targets across the continent in recent weeks.