On March 31, a source within Yemen’s Health Ministry accused militants loyal to the United Arab Emirates-aligned Southern Transitional Council of stealing nine ambulances provided by the World Health Organization to fight COVID-19. Southern Transitional Council official spokesman Nizar Haitham denied these allegations to Al-Monitor, emphasizing the council’s cooperation with the UN health agency and the Yemeni Ministry of Health against the threat of the novel coronavirus. Nonetheless, the episode reflected the recent upsurge in hostilities between the Yemeni government and the council.

The escalation of intra-coalitional tensions in southern Yemen was triggered by Saudi Arabia’s alleged involvement in blocking four Southern Transitional Council officials from returning to Aden for political negotiations March 13. This incident caused the council to warn of negative consequences for Yemen’s peace process and revealed Saudi Arabia’s frustrations with the UAE’s last-minute correspondence with Riyadh about the planned return of council officials from Jordan. Clashes erupted between the council and Yemeni government forces March 20, and on April 1, Saudi Arabia expanded its deployments of elite forces in Aden to guard against future hostilities instigated by the council.

Escalating frictions between Yemeni government forces and the council have sparked concerns that November's Riyadh Agreement, which united both factions into a governing coalition, could collapse. Nadwa al-Dawsari, a nonresident expert at the Middle East Institute, told Al-Monitor that the Riyadh Agreement “will likely inevitably fail” as “both sides who signed onto it walked away with very different interpretations of the agreement and that was never addressed.” The Southern Transitional Council’s interpretation of the Riyadh Agreement includes the belief that it should pursue self-determination or outright independence if popular support aligns with these views. Yemeni President Abed Rabbo Mansour Hadi disagrees with this perspective, as he emphasized the inviolability of Yemen’s unity in a December statement and stated his preference for a federal structure in Yemen.

In addition to the ambiguities within the Riyadh Agreement, deep-seated distrust between the Southern Transitional Council and the Hadi government has posed a major stumbling block to peace in southern Yemen. Southern Transitional Council-aligned officials continue to depict the Hadi government as a proxy of the Muslim Brotherhood, and Ahmed Omar bin Fareed, the Southern Transitional Council representative in Europe, recently asserted that al-Islah, Yemen’s Muslim Brotherhood movement, is aligned with the Houthis. Yemeni government officials also remain deeply divided on how to handle the council. Ayad Qassem, the editor-in-chief of South 24 News, told Al-Monitor that the Hadi government is divided into two factions. The first wing, which is funded by Qatar, seeks to “control the south and crush the separatists,” but the second wing, which is controlled by Saudi Arabia, “prefers to deal positively” with the Southern Transitional Council. These divisions noted by Qassem are causing the Yemeni government to vacillate between engagement and provocation of the council, undercutting its ability to live up to its Riyadh Agreement commitments.