Original sentence: At a later date, the treaty was expanded to include a declaration regarding Mongolia and Manchuria.On April 5 1945 the Soviet Union repudiated the pact, informing the Japanese government that "in accordance with Article Three of the above mentioned pact, which envisaged the right of denunciation one year before the lapse of the five year period of operation of the pact, the Soviet Government hereby makes known to the Government of Japan its wish to denounce the pact of April 13, 1941.On August 8 1945 the Soviet Union declared war on Japan and invaded Manchuria, keeping their promise to the other Allies at the Yalta Conference to enter the war with Japan three months after the end of World War II in Europe.Still later, in 1941, Japan, as a signatory of the Tripartite Pact, considered denouncing the Soviet-Japanese Neutrality Pact, especially after Nazi Germany invaded the Soviet Union (Operation Barbarossa), but made the crucial decision to keep it and to expand southwards invading the European colonies in Southeast Asia instead
Edited sentence: Later, in 1941, Japan, as a signatory of the Tripartite Pact, considered denouncing the Soviet-Japanese Neutrality Pact, especially after Nazi Germany invaded the Soviet Union (Operation Barbarossa), but made the crucial decision to keep it and to expand southwards invading the European colonies in Southeast Asia instead.On April 5 1945 the Soviet Union denounced the pact, informing the Japanese government that "in accordance with Article Three of the above mentioned pact, which envisaged the right of denunciation one year before the lapse of the five year period of operation of the pact, the Soviet Government hereby makes known to the Government of Japan its wish to denounce the pact of April 13, 1941.On August 8 1945 the Soviet Union declared war on Japan and invaded Manchuria, keeping their promise to the Allies at the Yalta Conference to enter the war with Japan two to three months after the end of World War II in Europe.On the same day, the same people also signed a declaration regarding Mongolia and Manchuria