Reuters: Denmark said on Sunday 65 world leaders had agreed to attend a U.N. conference in Copenhagen in December that will try to clinch a new global climate deal. Facing splits in the climate talks, Denmark 10 days ago formally invited the heads of state and government of 191 U.N. member states to come for the final two days of the Dec. 7-18 conference to push for a deal at the meeting, originally meant for environment ministers. Danish officials declined to provide a full list of …