SOUTH Sudan President Salva Kiir ordered military officers loyal to his vice president, Riek Machar, to be officially integrated into a unified command of the army, state media said, a central pillar of the peace process. Kiir and Machar's forces signed a peace agreement in 2018 that ended five years of civil war. But implementation has been slow and the opposing forces have clashed frequently over disagreements about how to share power. Fighting has flared in recent weeks. Following pressure from donors and international partners, the two men met on April 8 and Machar submitted a list of officers to…