Answer: Some societies succeed and others fail for many reasons. They could have a bad ruler, it depends on thier rules, how the people in the society behaved, etc.
Truman and Stalin we’re both powerful leaders. In 1947, the ‘Truman doctrine’ was announced. This doctrines purpose was: to contain threats in Greece and Turkey, and to counter Soviet geopolitical expansion during the Cold War. This was an act of maintaining peace.
Similarly, Stalin had also created a foreign policy which was commonly referred to as, ‘Stalin’s four point foreign policy’. This policy was declared in 1939, and was used to enforce his ideas of communism and to better the Russian people.
To conclude, both Truman and Stalin used foreign policies to maintain and control peace within their countries.
The Arctic ocean is the smallest of the world's five oceans
