Over the course of 35 years, Hezbollah evolved from "a relatively small group of revolution-oriented conspirators" into "arguably the most powerful and popular organization in Lebanon." The group changed from "a small cadre of militants" into a semi-military organization and a regional military actor. Professor Augustus Richard Norton says that the core reasons for Hezbollah's long-term success were its resistance to Israeli occupation, institution-building, anti-western worldview, piety, pragmatism, and Iranian support. Scholar Iver Gabrielson says the main reasons for Hezbollah's victory were its "pragmatism, social services and political participation." Andrew Exum says that Hezbollah won by combining kinetic (violent) and non-kinetic lines of operation. Over its history, the organization has performed many different kinds of warfare, including insurgency, sub-state conflict, hybrid warfare, and counter-insurgency.