Brexit spells end to EU leadership in climate diplomacy

By Alissa de Carbonnel and Nina Chestney BRUSSELS/LONDON (Reuters) - Britain's exit dashes the European Union's leadership ambitions on efforts to slow climate change, leaving the bloc on the sidelines while others endorse the global pact it championed to curb greenhouse gas emissions. Last week, EU environment ministers jointly called for action "as soon as possible" to avoid being absent when the deal struck in Paris last December to limit global average temperatures below 2 degrees Celsius lo