Reuters: Climate change represents such a threat to global security it must be at the heart of European Union foreign policy, much as energy security is now, a top EU bureaucrat said on Wednesday. The issue must also feature on the agenda in all contacts between the 27-nation bloc and other countries, said Helga Schmid, director of the policy unit of the European Council. “Climate change has to move to center stage of thinking about foreign policy,” she told a meeting at the Royal …