1. The population of Alsace and Lorraine is and regards itself as French; the population of Bohemia (more properly Czechia) is now and has been overwhelmingly Czech since the …6th century AD. However the Sudetenland was overwhelmingly German until the population was ethnically cleansed by the Czechs and German property was stolen from its native inhabitants. The present population of (most of) Silesia is Polish and/or Czech. Again the province of Silesia was German and overwhelmingly so from the 13th century until 1945. The Allies stole and brutally ethnically cleansed the German population from the province. This was and is an illegal act. Only the return of German property to it's rightful owners and placing the area under joint German-Polish administration will right this terrible wrong. The same goes for Pommerania and East Prussia. The Poles are only able to claim them due to the fact that they now occupy the land which was given them by Stalin. Of course it was not his to give in the first place. The buildings, infrastructure and architectural treasures found in these provinces are almost exclusively German. .
2. Germany wants to live at peace with its neighbours and is heavily committed to the European Union. The country is strongly pacifist..
3. In the treaty of 12 September 1990, which provided the international legal basis for German reunification, Germany solemnly undertook not to seek and extension of it territory. A nationalist government will perhaps in the future abrogate this treasonous agreement. German territory is not negotiable. ( Full Answer )