The leaders of Serbia and Kosovo have been invited to meet with top European Union officials to try to breathe life into talks aimed at normalizing their relations, as the 27-nation bloc’s leaders gather in Brussels for a two-day summit starting Thursday. Serbian President Aleksandar Vucic and Kosovo Prime Minister Albin Kurti are not expected to meet face to face, but the aim is to push forward with new “proposals and ideas” floated in exploratory talks last weekend, said Peter Stano, spokesman for EU foreign policy chief Josep Borrell. Fears are high of a resumption of the violence that has characterized their ties since Kosovo unilaterally broke away from Serbia in 2008.