Indian Minister of State for Environment and Forests Jairam Ramesh (L) shakes hands with Chinese Vice Chairman Minister for National Development and Reform Commission Xie Zhenhua (R) during the Indo - China Joint Workshop on National Actions Plans on Climate Change in New Delhi on October 21, 2009. India and China put aside a recent diplomatic spat to sign a five-year agreement Wednesday to cooperate on climate change leading up to crucial talks in Copenhagen.