Undesirable but Unremovable Migrants: War Criminals, Terrorists and Foreign Offenders in Limbo

Across the globe, tens of thousands of alleged ‘criminal’ migrants find themselves trapped in limbo. They are unwanted in the countries hosting them but cannot be deported because they are stateless, because human rights law or lack of political will prevents it, or because they themselves do not cooperate. These individuals – referred to as undesirable but unremovable migrants (UBUs) – include former World War II concentration camp guards, minor drug traffickers, rapists, acquitted genocid...