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Francois Hollande

Obama prods world on climate change, faces pushback at home

Facing pushback at home, President Barack Obama said Sunday that American leadership was helping make gains in the global fight against climate change as he tried to reassure world leaders assembling for a historic conference in Paris that the U.S. can deliver on its own commitments.

Obama was joining more than 150 leaders for the opening days of a two-week conference where countries are trying to negotiate an agreement aimed at avoiding a calamitous increase in global temperatures. In a Facebook post as he flew to Paris, the president said he was "optimistic about what we can achieve because I've already seen America take incredible strides these past seven...