Switzerland fervently guarded its independence since early-13th century. Its mountainous terrain offered excellent defensive positions against multiple invasions from various European powers. Its confederation originated from urban commercial guilds, hence the country never had an official aristocratic class or imperial family. Switzerland - en.wikipedia.org/wiki/Switzerland

During WW2, Swiss delicately balanced its neutrality between Allies and Axis powers. Being land-locked, majority of trade was with Germany, yet Axis powers did periodically permit Allied goods and supplies to be shipped into the country. Nevertheless, being a neutral haven in middle of German-occupied Europe, Switzerland was filled with spies and double-agents from all international corners.

28 April 1944 : Diplomatic controversy erupted in Switzerland when a German 3-crewman radar-enhanced Messerschmidt Me-110G-4 fighter (shown above) strayed into Swiss air space after being damaged by British bomber formations during a night engagement, and was forced to land at Dudendorf airdrome north of Zurich. Equipped with latest Lichenstein SN-2 aerial radar system and Schrage Musik (Jazz Music) weapons, Germans were very anxious to have the plane returned, while Allies eagerly sought its possession. Messerschmitt Me 110 - en.wikipedia.org/wiki/Me_110

Situation deteriorated when Heinrich Himmler: head of German SS, suspected German crewmen of defecting to Allies and arrested their families (Hitler had families released and gave personal apology), while German Air Marshal Hermann Goering wanted to bomb Dudendorf to destroy the parked plane. A plan was also advanced to have Waffen-SS Major Otto Skorzeny launch a commando mission to destroy the plane. Otto Skorzeny - en.wikipedia.org/wiki/Skorzeny