Reuters: Japanese Prime Minister Yukio Hatoyama called on his Indian counterpart on Saturday to make an international commitment on climate change, saying it was vital for a U.N. deal due in Copenhagen in December. Hatoyama, who took office last month after a landslide election victory, has pledged Japan — the world’s fifth biggest emitter of greenhouse gases — will cut emissions 25 percent by 2020 and hopes emerging nations like China and India will also sign up to an ambitious global …