Reuters: People in the United States, Britain and India see war and terrorism as the top global challenges while Chinese are more worried about climate change, according to a poll commissioned by King’s College London. In an Ipsos MORI survey conducted in eight countries — Australia, Brazil, China, Britain, India, Saudi Arabia, South Africa and the United States — for the London university, 62 percent of the Americans polled chose war and terrorism as a top issue the world needed to address. In China,…