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In page Dieter F. Uchtdorf:

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When Uchtdorf was about eleven, his father's political beliefs, incongruent with Soviet rule, earned him the label of "dissenter", thus putting their lives in danger.[4] They fled East Germany and resettled in U.S.-occupied West Germany. His sisters accomplished this by jumping from a moving train that happened to pass through West Germany, while Dieter and his mother climbed a mountain to avoid Russian guard checkpoints.