Reuters: The European Union will surmount internal disputes and honor pledges to help poor states tackle climate change, the bloc’s environment chief said Friday, urging other rich regions to make clear their goals. The call by Environment Commissioner Stavros Dimas echoed a warning this week by United Nations climate chief Yvo de Boer, who expressed concern over the slow progress being made before climate talks in Copenhagen in December. Success at the meeting hinges on whether rich …