However, he was persuaded by members of the Lebanese parliament to remain in office for the rest of his mandate. In 1961, he suppressed an attempted coup by the Syrian Social Nationalist Party, which had been infuriated over his associations with the Nasser regime. To hinder such future threats, he strengthened the Lebanese intelligence and security services, thus preventing any further foreign interference in Lebanese internal affairs. Chehab's rule was a delicate balancing act, maintaining relative harmony between the nation's Christian and Muslim populations. He followed the path and principles of dialogue and moderation coupled with public reforms, which came to be known as "Chehabism". Generally deeply respected for his honesty and integrity, Chehab is credited with a number of reform plans and regulations to create a modern administration and efficient public services. This eventually brought him into conflict with the traditional feudal, confessional, and clan-based politicians who saw their grip on power diminishing. In 1964, Chehab, whose presence at the head of the country was still seen by many as the best option for stability and future reforms, refused to allow the Constitution to be amended to permit him to run for another presidential term. He backed the candidacy of Charles Helou who became the next president. Chehab later became dissatisfied with Helou's presidency over the perceived mishandling of the armed presence of Palestinian guerrillas in Southern Lebanon and over Helou's maneuvers to pave the way for the traditional feudal politicians to regain power. Chehab was widely expected to contest the presidential election of 1970, but in a historical declaration, he declared that his experience in office had convinced him that the people of his country were not ready to put aside traditional, feudal politics nor support him in building a modern state. He chose to endorse his protégé Elias Sarkis instead. In the closest vote in Lebanese history, Sarkis lost the election to the feudal leader Suleiman Frangieh by a single vote in the National Assembly. The election was regarded as a defeat for the old statesman and marked the end of the "Chehabist" reforms and era. The first months of the Frangieh mandate saw the dismantling of the country's intelligence and security services built by Chehab. They were feared and accused of still having a strong hold on political life. This, however, allowed rapidly increasing multiple foreign interferences in the internal affairs of the country, soon manifesting itself as a Palestinian military presence in 1973, and the onset of civil war in 1975. Fouad Chehab died in Beirut in April 1973, at the age of 71.