Negotiations among the European Union’s 27 leaders for recovery plans worth €1.8 trillion ($2.06 trillion) dragged into a fourth day on Monday, leading to tense exchanges and fears of a breakdown. After three days of talks to agree a proposed spending package to lift Europe’s economy out of a coronavirus-sparked slump, EU leaders still hadn’t nailed down the size of the final plan, how much of it should be available in grants and some of the conditions attached. …