SANAA – Thousands of Yemenis rallied Thursday in the port city of Aden in support of southern separatists who seized the city from the country's internationally recognized government amid diplomatic efforts aimed at reinstating forces loyal to the Saudi-backed president. Yemeni military officials said a Saudi Arabia-United Arab Emirates commission arrived Thursday in Aden to monitor the withdrawal of separatist forces from government headquarters and military camps seized last week from President Abel Rabbo Mansour Hadi's presidential guards after four days of fighting that left more than 70 people dead, including civilians. Officials in Hadi's camp said that forces loyal to the so-called Southern Transitional Council, which represents the separatists, had withdrawn from the presidential palace. Yet, they still remain in key positions in Aden, which has served as the seat of Hadi's interim government since 2014. Officials spoke on condition of anonymity as they were not authorized to brief the media.