Reuters: Most world leaders plan to attend a climate summit in Copenhagen this month, boosting chances that a new U.N. deal to fight climate change will be reached, host Denmark said on Tuesday. The number of leaders planning to come to the December 7-18 talks had risen to 98 out of the 192 members of the United Nations, Denmark said. The number was up from 65 in a first count after invitations were sent last month. “It gives me a strong feeling that we are on the right track,” Danish …