World leaders have begun arriving in Copenhagen to take part in the UN's climate change conference and try to salvage a deal from one of the most ambitious environmental gatherings in years.
They are facing a December 18 deadline to agree a global deal aimed at slowing rising temperatures set to cause heat waves, floods, desertification, and higher ocean levels.
U.S. President Barack Obama, who will be among 120 leaders to take part in the final summit starting on December 17, expressed confidence a deal can be reached despite differences over emission cuts and financial aid for poorer countries.
UN Secretary-General Ban Ki-moon has said
"success is within reach" and implored countries to salvage an agreement while warning that "three years of effort have come down to three days of action," according to Reuters.compiled from agency reports