BRUSSELS (Reuters) - The United States must act to cap its emissions of greenhouse gases and join the fight against climate change or risk losing global leadership, a former CIA director said in a report released on Monday. "The United States must adopt a carbon emission control policy," John Deutch, head of the Central Intelligence Agency in 1995-96, said in a report to the Trilateral Commission, a grouping of business and opinion leaders from Europe, the United States and Asia. "If the United States or any other OECD country that is a large producer of greenhouse gas emissions is to...