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The Boston Globe

Politics

In Berlin, Obama renews call for nuclear reductions

BERLIN (AP) — Appealing for a new citizen activism in the free world, President Barack Obama renewed his call Wednesday to reduce U.S. and Russian nuclear stockpiles and to confront climate change, a danger he called ‘‘the global threat of our time.’’

In a wide-ranging speech that enumerated a litany of challenges facing the world, Obama said he wanted to reignite the spirit that Berlin displayed when it fought to reunite itself during the Cold War.

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