Who can declare “Jihad”? Can terrorist leaders declare “Jihad”?

Islam places a great emphasis on order in its political philosophy. Anarchy and arbitrary acts are greatly condemned. Basic principles relating to war are buttressed by these twin considerations. Islam teaches in the Quran: “O You who believe, Obey God, and obey the Messenger, and those in authority amongst you,” (4:59). Qur’anic commentators mention that those in authority amongst you means legitimate political authorities and scholars. These are the people who can rightfully declare war. Firstly, legitimate political authorities can make such a call. Secondly, in their absence, those scholars who are universally recognized by the Muslims for their scholarship and piety. Terrorist leaders are neither scholars nor government leaders, they lack the authority to call for war.