Its strategy was two-pronged: armed struggle against what were perceived as Western imperialism and its agents; and an internal purifying process to free Islamic territory and Muslim minds of non-Islamic cultural, intellectual and spiritual influences, by providing justice, services, resources to the "mustazafin" (weak) masses of the Muslim world. These attempts to spread its Islamic revolution strained the country's relations with many of its Arab neighbours, and the extrajudicial execution of Iranian dissidents in Europe unnerved European nations, particularly France and Germany. For example, the Islamic Republic expressed its opinion of Egypt's secular government by naming a street in Tehran after Egyptian President Anwar Sadat's killer, Khalid al-Istanbuli. At this time Iran found itself very isolated, but this was a secondary consideration to the spread of revolutionary ideals across the Persian Gulf and confrontation with the US (or "Great Satan") in the 1979-1981 hostage crisis.