September 23, 2014
United States President Barack Obama addresses the Climate Summit, at United Nations headquarters, Tuesday, Sept. 23, 2014. (AP Photo/Richard Drew)
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Obama urges world to follow US lead on climate
UNITED NATIONS (AP) — In the first international test for his climate-change strategy, President Barack Obama pressed world leaders Tuesday to follow the United States' lead on the issue, even as a United Nations summit revealed the many obstacles that still stand in the way of wider agreements to reduce heat-trapping pollution.