<p>Confused, mostly you are incorrect:</p>
<ol>
<li>"japan attacked russia several times"</li>
</ol>
<p>During most of the world war, there were practically no hostilities between Japan and the USSR based on the Neutrality Pact signed on 13 April 1941. The 1941 Neutrality Pact was legally binding until 13 April 1946. Russia did attack Japan in the latter half of 1945 but this was after we dropped the atomic bombs and Stalin wanted a piece of the fruits of victory in the far east. Japan guranteed she would not attack Russia which made it possible for Stalin to remove troops to the west--it seems both Stalin and the Japanese understood the difficulties of a two front war. It seems that avoiding a two front war with Russia was more important to the Japanese than the pact between Germany, Japan, and Italy. </p>
<ol>
<li>"the materials given to the USSR by the West was minimal"</li>
</ol>
<p>Confused, here is a listing of the "minimal" materials GIVEN to Stalin by the United States between 1941-1945. The list below is the amount of war material shipped to the Soviet Union through the Lend-Lease program from the beginning of it until September 30, 1945.</p>
<p>Aircraft.............................14,795
Tanks.................................7,056
Jeeps................................51,503
Trucks..............................375,883
Motorcycles..........................35,170
Tractors..............................8,071
Guns..................................8,218
Machine guns........................131,633
Explosives..........................345,735 tons
Building equipment valued.......$10,910,000
Railroad freight cars................11,155
Locomotives...........................1,981
Cargo ships..............................90
Submarine hunters.......................105
Torpedo boats...........................197
Ship engines..........................7,784
Food supplies.....................4,478,000 tons
Machines and equipment.......$1,078,965,000
Noniron metals......................802,000 tons
Petroleum products................2,670,000 tons
Chemicals...........................842,000 tons
Cotton..........................106,893,000 tons
Leather..............................49,860 tons
Tires.............................3,786,000
Army boots.......................15,417,000 pairs</p>
<p>Minimal? Ask Stalin if he thought it was minimal.</p>
<ol>
<li> "the majority of the war was on the Eastern Front"
You are partly right---the Eastern Front saw most of the dying on both sides, German and Soviet, so in that sense you could argue that most of the war was fought there. However it was a global conflict, and the success of the Russians was dependent for the most part on the success of her allies in the west and in the pacific. The Soviet Army did most of the dying because their entire strategy was based upon quantity not quality--they had the huge resource of manpower which they literally sacrificed by the hundreds of thousands because they could--the life of a Russian soldier was not valued very high.</li>
</ol>