FILE - Protesters wear yellow vests at a protest as they wave national flags and chant slogans against Libya's Field Marshal Khalifa Hifter, in Tripoli, Libya on April 19, 2019. Libya faces a serious security threat from foreign fighters and private military companies, especially Russia’s Wagner Group which has violated international law, U.N. experts said in a report obtained Friday, May 27, 2022 by The Associated Press. (AP Photo/Hazem Ahmed, File)