Answer:
so...
Step-by-step explanation:
A: the berlin blockade/ berlin airlift
B: The east trying to weaken the west by starving them out of the city. But the US came in clutch and was helping them by flying over the easts blockade
C: Stalin thought that the U.S would come on the ground and try to destroy the blockade
D: NATO and Warsaw Pact
E: NATO fueled the west's military against the USSR and the warsaw pact basically... if one member state was attacked all the other memeber states would help defend them.
Hope this helps a little... good luck :)
-A