Spiegel: German Environment Minister Sigmar Gabriel discusses the rift among EU member states over a current proposal to slash carbon dioxide emissions. He says a deal will likely be reached, but that flexibility is needed to prevent companies from leaving Europe and taking jobs with them. SPIEGEL: Mr. Gabriel, the European Union heads of state and government are at a loggerheads over climate protection. Is this the end of Europe’s role as the leader in climate change issues? Gabriel: …