 Complete the following phrase:  The matter of war reparations was the domit issue during the whole tenure of the cabinet. After the failure of the in March 1921, German attempts to get the US government to mediate between the German position and those of the French and British governments were unsuccessful. This put a heavy strain on the coalition on which the government was based, with the DVP arguing that they could not support the policies of Foreign Minister Simons any longer. The DVP opposed making any counterproposal on reparations that could have been acceptable to the Allies. The end of the cabinet was finally brought about by the Londoner Ultimatum. By late Aprilearly May there were rumours that the Allies were about to present a new payments schedule in connection with threats of new sanctions as happened on 5 May. On 4 May, despite an 