I think Japan was really worried about China.

Without Lend / Lease, Stalin most likely would have been defeated. The US and the Allies provided enough equipment & supplies to allow Stalin to hang on until the US entered the war. We are living with those results today. Just my

Japan started its Imperialistic ways years before Germany did. They had a rogue General that invaded China without the Emperors authorization either in the late 20's or early 30's.

I think Japan would have taken China and Russia.
Japan was hungry for oil and would have soundly defeated a Russia terribly weakened by Germany.

Could be. Do you think we would have not entered into the LL agreement with Russia if we took a more defensive position?

The Second Sino-Japanese War was fought between the Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931.[24][25] It is considered part of World War II, and often regarded as the beginning of World War II in Asia. It was the largest Asian war in the 20th century[26] and has been described as "the Asian Holocaust", in reference to the scale of Japanese war crimes against Chinese civilians.[27][28][29] It is known in China as the War of Resistance against Japanese Aggression

Remember that we did not defeat Japan until much later after Russia had taken over Berlin