Legal Question in International Law in Germany

They are legal. That simple.

From 1945 and 1949, the Western Occupying Western Forces shifted step by step their powers to a newly established German state.

On 01st of July, 1948, the Western Allied Powers stipulated in the Frankfurt document the conditions under which a Western German Federal State could be established and handed it over to the Prime Ministers of the already existing single Western German States.

The Basic Law (Grundgesetz, ie the German constitution), was enacted in 1949 with the consent of military governors of the Western Allied Powers on 23rd of May, 1949.

At the beginning of the 50`s the rearmament of Western Germany and its integration into the NATO was on the political agenda. The state of war was finished by the mid 50`s by the one-sided acts of the Allied Powers. By concluding the General Treaty on 26th of May, 1952 in Bonn, the Western Allied Forces and Western Germany agreed on an interim solution which was supposed to fill the legal vacuum between the German capitulation and a peace treaty to be concluded in the future. It thereby should serve as an interim solution and granted Western Germany sovereignity to the widest possible extent.

The Two Plus Four Agreement between East and West Germany and the four Allied Powers, a master piece of international diplomacy, of 1990 set the corner stone for the full and unconditional sovereignity of a unified Germany.