Russia's collapse into Bolshevist anarchy, however, presently opened up new vistas. Not merely northern Manchuria, but also the huge expanse of Siberia, an almost empty world of vast potential riches, lay temptingly exposed. At once the powerful imperialist elements in Japanese political life began clamoring for "forward" action. An opportunity for such action was soon vouchsafed by the Allied determination to send a composite force to Siberia to checkmate the machinations of the Russian Bolsheviki, now hostile to the Allies and playing into the hands of Germany. The imperialist party at Tokio took the bit in its teeth, and, in flagrant disregard of the inter-Allied agreement, poured a great army into Siberia, occupying the whole country as far west as Lake Baikal. This was in the spring of 1918. The Allies, then in their supreme death-grapple with the Germans, dared not even protest, but in the autumn, when the battle-tide had turned in Europe, Japan was called to account, the United States taking the lead in the matter. A furious debate ensued at Tokio between the imperialist and moderate parties, the hotter jingoes urging defiance of the United States even at the risk of war. Then, suddenly, came the news that Germany was cracking, and the moderates had their way. The Japanese armies in Siberia were reduced, albeit they still remained the most powerful military factor in the situation. Germany's sudden collapse and the unexpectedly quick ending of the war was a blow to Japanese hopes and plans in more ways than one. Despite official felicitations, the nation could hardly disguise its chagrin. For Japan the war had been an unmixed benefit. It had automatically made her mistress of the Far East and had amazingly enriched her economic life. Every succeeding month of hostilities had seen the white world grow weaker and had conversely increased Japanese power. Japan had counted on at least one more year of war. Small wonder that the sudden passing of this halcyon time provoked disappointment and regret.