Other experts believe Pyongyang's recent charm offensive, including a high profile visit to Seoul, technically enemy territory, is a PR exercise to improve its image.
During World War I, however, the British authorities interned him, along with other German citizens, in a British Enemy Citizens' Camp on the Isle of Man.
The United States is to partially lift its arms embargo on its former foe Vietnam which has been in place for nearly four decades. Catherine Davis has the details.