The European Union's carbon market emerged as one of the most contested topics at a summit of EU leaders in Brussels on Thursday and Friday – just days after high-level political talks between EU environment ministers revealed deep splits on the issue.
In lengthy debates that dragged late into the night on Thursday, the leaders of the three Nordic members faced off against the four-nation Visegrad group – Hungary, Slovakia, the Czech Republic and Poland –over the future of the bloc's Emissions Trading System (ETS).
