A brewing spat over the European Union’s plan to tighten its 2030 climate goal is adding to a list of conflicts that the region’s leaders will have to deal with at a meeting next week, threatening to delay the start of an unprecedented green overhaul. Old fault lines between eastern and western member states are resurfacing over the costs of an ambitious economic clean-up just as Poland and Hungary threaten to veto the bloc’s budget and a recovery fund. EU leaders will tackle these and other issues at a summit in Brussels Dec. 10-11. At the heart of the climate conflict is the effort to deepen the EU emissions-reduction target to at least 55% by the end of the next decade from 1990 levels, a key element of the European Green Deal. Raising the ambition from the existing goal of 40% would need an additional 350 billion euros ($424 […]