UNITED NATIONS (AFP) - UN chief Ban Ki-moon said Thursday he favoured a binding cap on greenhouse gas emissions but noted that the climate change conference in Indonesia should focus on setting a timeline for a deal by 2009. "As far as I am concerned, as secretary general, as a matter of principle, there should be mandatory capping," Ban told reporters here two days before he was due to leave for the Bali conference. "However, I know that there are some concerns in some of the developing countries, therefore, this issue should be discussed in the future negotiation process," he...