Moldovans have voted by a razor-thin majority in favour of joining the European Union, nearly final results showed on Monday after a pivotal referendum clouded by allegations of Russian interference. On Sunday, Moldova held key votes in a presidential election and a referendum on EU membership, marking a critical moment in the continuing struggle between Russia and the west for control over the small, landlocked nation in eastern Europe, home to 2.5 million people. After nearly 99.5% of votes were counted in the referendum that asked voters to choose whether to enshrine in the country’s constitution a path toward the...