European Union leaders failed to convince Hungarian Prime Minister Viktor Orban on Thursday to lift his blockade on a €90 billion (US$103 billion) EU loan to help Ukraine keep up its fight against Russia’s invasion.After a summit in Brussels, several leaders voiced deep frustration with Orban, who has cited a dispute over a war-damaged pipeline to justify blocking the implementation of the loan agreed back in December.German Chancellor Friedrich Merz accused Orban - who maintains cordial ties...