World News in Brief: Sudan drone attacks condemned, South Sudan violence, airstrikes in Ukraine, South Africa Freedom Day An aid truck from the UN refugee agency ( UNHCR ) that was carrying emergency shelter kits came under attack by a drone on Friday while transiting through the town of Umm Drisaya in North Darfur state.  Although the driver escaped unhurt, all supplies were destroyed in the fire. The truck was heading to the town of Tawila, where 700,000 people have sought safety after fleeing fighting in other parts of Sudan. The brutal civil war between rival militaries has now entered a fourth year.…