Similar ambitions of Mao and Stalin to establish pro-communist Korean state, which was divided into two spheres of influences Soviet, with communist regime of Kim Il Sung and pro-American nationalist authoritarian regime of Syngman Rhee. But according to authors Offner and Gaddis we can say that the role played by North Korean authorities was the main in this conflict. The war started North Korean in 1950 was over three years later, yet no result was achieved. This conflict revealed bankruptcy of United Nations to solve major conflicts and in many respects defined the course of history for 40 more years. These authors which are called "revisionist" and whose ideas are widely criticized today make a clear point that neither USA nor its allies in Europe (mainly France and Great Britain) were ready for a chain reaction of nationalism spread in the third world after the end of WWII, which sympathized communist ideology. But their post colonial past and inability to accept new societies who were on their era of creating statehood also led to the growth of leftist socialist and communist ideas, which was masterly used by the U.S.S.R. up until its economic stagnation in late 1970's. The U.S.S.R. successfully used opportunity to establish close relations with nationalists such as Ho Chi Minh and later Fidel Castro, who got refusal from Eisenhower to establish diplomatic relations. According to the view point of these historians the U.S.A. war undervalued the significance of growth of nationalism in the Third world countries during a period of Cold, mainly relying on...

From the other side, such policies of "internationalism" considerably shacked economy of Soviet Union, which had limited potential, due to its centralized nature and isolation from Western World which as a result led to collapse of Soviet Union.
Making a conclusion it's important to note that ideas of revisionist authors such as Walter LaFeber, Arnold Offner and John Gaddis are based on rationalism, yet evaluation of definite political issues is made from the perspective of people who are free of "western propaganda." The cold war was inevitable already at the end of the WWII as both super powers revealed its potential which was hidden and undervalued in pre-war years. Marshall's Plan, which in many respects accelerated the coming of Cold War, was also inevitable, due to high popularity of communist and socialist ideas in after war France, Italy and Germany, especially in years of reconstruction, when European nations lacked economic stability and bearable conditions of living. The collapse of colonial system with its unpredictable circumstances was also more a fault of former empires, than a fault of the U.S.A. As none of the empires appeared able to control political and social processes in former colonies.

References

LaFeber, Walter America, Russia, and the Cold War McGraw-Hill Humanities, 2006

Merrill, Dennis Major Problems in American Foreign Relations: Since 1914 Houghton Mifflin Company, 2005

U.S. Foreign Policy