Sudan's war is now in its fourth year, and the country remains the site of the world's largest humanitarian crisis, with tens of thousands killed and millions displaced. This week, two developments have sharpened a central question: what is this war really about? On Tuesday, army chief General Abdel Fattah al-Burhan's government granted temporary immunity to exiled politicians willing to return for a national dialogue. Days later, posters appeared on social media calling for Burhan himself to become president. All this against a backdrop of mounting international pressure, with the United States having twice sanctioned Khartoum over what it says was the army's use of chemical weapons, a charge Sudan denies. Our guest saw the poster campaign as a revealing moment. He is a former Minister of Cabinet Affairs in the civilian-led transitional government toppled in the 2021 coup, and one of the most prominent civilian voices against the war. Khalid Omer Yousif is Vice-Chairman of the Sudanese Congress Party and a leading figure in the Sumud anti-war coalition