Eisenhower was popular due to his plan to block the isolationist foreign policy of senator Rover a Taft, who opposed the NATO. Eisenhower won that election and the 1956 election in landslides
I believe the Berlin Airlift was necessary because Berlin was located in East Germany (a Soviet satellite) and at this time (the cold war) there were geopolitical tensions between the Soviet Union and the United states. so because of this the only viable option to supply west Berlin was to do an Airlift.
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Answer: Became more millenial and radical