John F. Kennedy was elected president in 1960 and outlined a vision of a "New Frontier" that included establishing the Peace Corps, accelerating the space program, and proposing new programs for healthcare and education. Kennedy believed his most urgent task was redefining nuclear strategy and increased spending on conventional forces. His administration dealt with crises over Berlin and nuclear missiles in Cuba. Kennedy was assassinated in 1963. Lyndon B. Johnson continued Kennedy's agenda and launched his "Great Society" program to expand the federal government's role in education, healthcare, poverty, and urban development.