Africa News Tonight - Conflict in Sudan’s capital has provoked global calls for a cease-fire, but questions remain about how other countries can persuade combatants in Khartoum to lay down their arms. Fighting raged in the Sudanese capital of Khartoum after the warring parties, locked in a power struggle, failed to uphold an overnight cease-fire. And, migrants in South Africa are celebrating a victory after the Johannesburg High Court declared null and void all regulations denying them free healthcare in government hospitals. For this and more, stay tuned to Africa News Tonight!