Why does Kennan believe the Soviet Union poses a threat to the United States?

Kennan argued that a German "third force" in the Cold War would pose no danger to the United States, while depriving the Soviet Union of reparations from Germany and would be more destabilizing to Eastern Europe than to Western Europe.

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.