Agence France-Presse: Britain and France on Friday committed to paying developing nations to combat global warming by calling for a 10-billion-dollar climate fund financed by rich countries. Prime Minister Gordon Brown and President Nicolas Sarkozy, attending a closed-door Commonwealth summit in Trinidad, urged that the fund be adopted at climate talks to be held in Copenhagen December 7-18. Brown said Britain would contribute 1.3 billion dollars over three years. Sarkozy, in a speech to …