Nicholas Lehmann in The New Yorker:

Murrow_1During the war, Murrow never had to play the role of the dispassionate reporter. He was an important player in the Allied war effort, and, under the circumstances, that did not conflict with his journalistic role. Murrow’s special significance was in making Americans see, through his broadcasts about the Blitz, that the European war was not something faraway and irrelevant. When Harry Hopkins, F.D.R.’s right-hand man, came to London for a visit, eleven months before Pearl Harbor, he met with three people on his first day in town: Anthony Eden, Winston Churchill, and Murrow. Churchill was a personal friend as well as a journalistic subject, and Murrow had a wartime affair with Churchill’s daughter-in-law, Pamela Digby Churchill, who later married Averell Harriman.

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