Recognizing a national emergency when the French seized the Ruhr and inflation spiraled out of control in 1923, Müller was ready to enter into a "Grand Coalition" led by Gustav Stresemann (August to November 1923). However, differences in economic and social policies strained relations between the SPD and the other members of the coalition. Müller did support the emergency measures taken after October 1923, but the biased way the Reich government dealt with the socialist provincial governments in Thuringia and Saxony on the one hand and the right-wing regime in Bavaria on the other, caused the SPD to leave the coalition in November 1923.