Finland's prime minister Matti Vanhanen on Monday urged the United States to step up action in reducing global warming and expressed hopes that the next U.S. president would make the issue a priority. Vanhanen, who plans to meet senior U.S. officials including Vice President Dick Cheney Tuesday, praised the U.S. engagement in recent international negotiations to reach a new climate change agreement. But he implied that he would like to see more commitment from Washington to international cooperation on reducing greenhouse gas emissions. «All nations need to show determination and leadership in the efforts to tackle climate change. The United...