Members of Misrata forces, under the protection of Tripoli's forces, prepare themselves to go to the front line in Tripoli, Libya April 8, 2019. At the weekend troops from the Libyan National Army, or LNA, took a disused airport in Tripoli's south. REUTERS/Hani Amara

Members of Misrata forces, under the protection of Tripoli's forces, prepare themselves to go to the front line in Tripoli, Libya April 8, 2019. These soldiers are preparing to advance on Tripoli as two rival governments battle over Libya's capital. REUTERS/Hani Amara

A Member of Misrata forces, under the protection of Tripoli's forces, prepares himself to go to the front line in Tripoli Libya April 8, 2019. REUTERS/Hani Amara

Military vehicles of Misrata forces, under the protection of Tripoli's forces, are seen in Tripoli, Libya April 8, 2019. REUTERS/Hani Amara

Members of Misrata forces, under the protection of Tripoli's forces, prepare themselves to go to the front line in Tripoli, Libya April 8, 2019. REUTERS/Hani Amara