UN chief Ban Ki - moon : ` ` We have a chance , a real chance , here and now '' Clinton urges poor nations to help as the climate summit heads into its stretch . World leaders are arriving for ` ` high - level '' negotiations in final days of summit .
U.N. chief Ban Ki-moon : `` We have a chance , a real chance , here and now '' Clinton urges poor nations to help as Copenhagen climate summit heads into home stretch . World leaders begin arriving for `` high-level '' negotiations in final days of summit .