What was the response of the United States to USSR's blockade of Berlin?

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The U.S. response to the USSR's blockade of Berlin was to airlift supplies into the city using military aircraft. This operation, known as the Berlin Airlift, lasted for over a year and successfully provided food, fuel, and other necessities to the city's inhabitants. The U.S. did not build a wall or post guards around East Germany until several years later, and did not impose economic sanctions or establish military outposts with nuclear weapons in response to the blockade. The U.S. did not formally complain to the United Nations about the blockade, although it did discuss the issue with other member nations.

What Was the Response of the United States to USSR's