The Dervish legacy in Somalia and Somaliland has been influential. It was the "most important revivalist Islamic movements" in Somalia, state Hasan and Robleh. The movement, and particularly its leader, has been controversial in Somalia. Some cherish it as the founder of modern Somali nationalism. Others see it as an ambitious Muslim brotherhood militancy that destroyed Somalia's opportunity to move towards modernization and progress in favor of a puritanical Islamic state embedded with Islamic education. Its ideas are enshrined in the constitution of Somalia.