Fighters from forces of the UN-backed Libyan government are seen during clashes with Libyan National Army (LNA) troops at the Ain Zara frontline in Tripoli, Libya, on May 11, 2019. According to the World Health Organization, more than 400 people were killed and at least 2,000 wounded since the Libyan conflict escalated in early April. (Xinhua/Amru Salahuddien)