But he agreed with the Left Communists that a separate peace treaty with an imperialist power would be a terrible morale and material blow to the Soviet government, negate all its military and political successes of 1917 and 1918, resurrect the notion that the Bolsheviks secretly allied with the German government, and cause an upsurge of internal resistance. He argued that any German ultimatum should be refused, and that this might well lead to an uprising in Germany, or at least inspire German soldiers to disobey their officers since any German offensive would be a naked grab for territories. Trotsky wrote in 1925: