DEMOCRATIC Republic of Congo has arrested a Middle Eastern national for alleged ties to an Islamist militia in the east of DRC, potentially the first time a non-African fighter has been found working with the group. The Allied Democratic Forces (ADF), an Islamist armed group led by Ugandans, has been blamed for dozens of massacres with hatchets and firearms in the last three years, mostly in remote villages. In 2019 the ADF's leadership pledged allegiance to Islamic State (IS), which has in turn claimed dozens of the ADF's attacks, although United Nations experts say they have not found conclusive evidence…