The timing for a vote on the Security Council resolution was unclear. Diplomats were focused on who would oversee the inspection of aid entering the enclave.
The capture by paramilitary forces of Wad Madani, a strategic city in the country’s agricultural region, marks a watershed in the civil war that has upended life in the northeast African nation.
Results of elections this month give a third term to President Abdel Fattah el-Sisi, who has presented himself as a strong leader in an unstable region.