WASHINGTON (AP) — 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. "What makes this gathering different is that more than 180 nations have already submitted plans to reduce the harmful emissions that help cause climate change, and America's leadership is helping to drive this progress," Obama said in a Facebook posting hours before his scheduled late-night arrival in the French capital. "Our businesses and workers have shown that it's possible to make progress toward a low-carbon future while creating new jobs and growing the economy," he wrote.Read more on NewsOK.com