 It wants to still have the freedom to be able to mount such operations for as long as the threat, as far as Israel is concerned, of Hamas and other Palestinian factions is still very much live. Seb, many thanks indeed. Sebastian Usher there, live from Jerusalem. This is the Newsroom from the BBC World Service. For 15 years, northeast Nigeria has suffered a ruthless insurgency by the Islamist militant group Boko Haram.