FILE - In this Nov. 9, 2019 file photo, a supporter of Shiite rebels, known as Houthis, holds a banner with Arabic writing that reads, "at your order, oh messenger of Allah," during a celebration of Mawlid al-Nabi the birth of Islam's prophet Muhammad in Sanaa, Yemen. A satellite TV channel run by Yemen’s Houthi rebels has broadcast on Thursday, Oct. 15, 2020, the start of a long-awaited prisoner exchange between the country’s warring sides. (AP Photo/Hani Mohammed, File)