JOHANNESBURG—South Africa will deploy soldiers to quell the violence that erupted in the wake of former president Jacob Zuma’s jailing, the military said on Monday, after days of riots and looting left at least six people dead. Disturbances worsened as Zuma challenged his 15-month prison term in the country’s top court after weekend unrest by pro-Zuma protesters in his home province of KwaZulu-Natal (KZN) and Gauteng, where the country’s largest city Johannesburg is located. Police said 219 arrests had been made, as opportunistic criminals appeared to take advantage of the anger some feel over Zuma’s incarceration to steal and cause destruction. Any confrontation with soldiers risks fuelling claims by Zuma and his supporters that they are victims of a politically-motivated crackdown by his successor, President Cyril Ramaphosa. The rand fell sharply after the military announced its deployment, extending losses to trade down 2 percent against the U.S. dollar by 12.30 …