On May 23, the Allies closed down the Flensburg administration and arrested its members. This formalised a legal vacuum that was only filled on June 5, when the commanders-in-chief of the four Allied Powers announced, in the Berlin Declaration, the assumption of "supreme authority" in Germany: the Allied forces not only took control of government, but also now assumed all the powers and legal authority of the German state as a whole. It was explicitly stated that this would not effect the annexation of Germany, although the four Powers asserted their authority, as the sole repository of German state power, to determine the future boundaries of German territory: