JOHANNESBURG (AP) — South African President Jacob Zuma resigned on Wednesday in a televised address to the nation, ending a turbulent tenure marred by corruption scandals that sapped the popularity of the ruling African National Congress and hurt one of Africa's biggest economies.

The resignation signaled an imminent end to a leadership crisis in South Africa and set the stage for Zuma to be replaced by Deputy President Cyril Ramaphosa, who has promised a robust campaign against corruption but will quickly face pressure to produce results in a country struggling with unemployment, economic ine...