Libya faces a serious security threat from foreign fighters and private military companies, especially Russia’s Wagner Group which has violated international law, UN experts said in a report obtained by The Associated Press. The experts also accused seven Libyan armed groups of systematically using unlawful detention to punish perceived opponents, ignoring international and domestic civil rights laws, including laws prohibiting torture. In particular, “migrants have been extremely vulnerable to human rights abuses and regularly subjected to acts of slavery, rape and torture,” the panel said in…