Fuad Shukr, better known by his nickname Hajj Mohsen, is a key military adviser to Hassan Nasrallah, the Hezbollah leader and a member of the organisation’s military council. The Israelis say Shukr has been directing Hezbollah’s attacks since the beginning of their border war 10 months ago with the Israel Defence Forces (IDF) claiming he was the commander responsible for the murder of the 12 children in Majdal Shams in the Golan Heights on Saturday evening.