India and China clashed angrily with the European Union over a planned "roadmap" towards a new pact on curbing greenhouse gases at the UN climate talks here on Sunday. Indian Environment Minister Jayanthi Natarajan told a plenary of the talks, running more than a day and a half into overtime, that her country was being threatened with demands to surrender the principle of burden-sharing between rich and poor. "India will never be intimidated by threats or intimidation or any kind of pressure like this," she warned.