Former South African president Jacob Zuma is due Monday to testify at a judicial inquiry where he faces tough questioning over allegations that he oversaw systematic looting of state funds while in power. Zuma struck a characteristically relaxed tone ahead of his televised appearance, which could last for five days, tweeting a video on Sunday of himself dancing and singing “Zuma must fall” before laughing heartily. The former president is accused of fostering a culture of corruption during a nine-year reign before he was ousted in 2018 by the ruling ANC party and replaced by Cyril Ramaphosa.