At the heart of this conflict is a falling out between Sudan's army chief Gen Abdel Fattah al-Burhan, and his deputy-turned-rival Mohamed Dagalo, who leads the RSF. Since the conflict broke out nearly 2 years ago, tens of thousands of people have since been killed and over 12 million displaced. The "biggest humanitarian crisis ever recorded" says the United Nations. For more the MSF Secretary-General, Christopher Lockyear.