Western offensive expected, and on the basis that substantive negotiations could only follow the replacement of the Hitler regime. Pius, without offering endorsement, advised Osbourne on 11 January 1940 that the German opposition had said that a German offensive was planned for February, but that this could be averted if the German generals could be assured of peace with Britain, and not on punitive terms. If this could be assured, then they were willing to move to replace Hitler. The British government had doubts as to the capacity of the conspirators. On 7 February, the Pope updated Osbourne that the opposition wanted to replace the Nazi regime with a democratic federation, but hoped to retain Austria and the Sudetenland. The British government was non-committal, and said that while the federal model was of interest, the promises and sources of the opposition were too vague. Nevertheless, the resistance were encouraged by the talks, and Müller told his contact that a coup would occur in February. Pius appeared to continue to hope for a coup in Germany into March 1940. Following the Fall of France, peace overtures continued to emanate from the Vatican as well as Sweden and the United States, to which Churchill responded resolutely that Germany would first have to free its conquered territories. The negotiations ultimately proved fruitless. Hitler's swift victories over France and the Low Countries deflated the will of the German military to resist Hitler. Müller was arrested during the Nazis' first raid on Military Intelligence in 1943. He spent the rest of the war in concentration camps, ending up at Dachau. The failed plots of 1938 and 1939 showed both the strength and weakness of the officer corps as potential leaders of a resistance movement. Its strength was its loyalty and solidarity. As Istvan Deak noted: "Officers, especially of the highest ranks, had been discussing, some as early as 1934 ... the possibility of deposing or even assassinating Hitler. Yet it seems that not a single one was betrayed by a comrade-in-arms to the Gestapo." Remarkably, in over two years of plotting, this widespread and loosely structured conspiracy was never detected. One explanation is that at this time Himmler was still preoccupied with the traditional enemies of the Nazis, the SPD and the KPD (and, of course, the Jews), and did not suspect that the real centre of opposition was within the state itself. Another factor