Libya on Thursday told Italy it would no longer help protect Italian shores from waves of illegal African migrants because Rome and other European Union states had failed to come up with promised support, according to Reuters. The move was announced shortly after Silvio Berlusconi took an oath to serve as prime minister -- his third time leading Italy's government -- and heralded potentially stormy relations between diplomatic and economic allies Rome and Tripoli. Italy is OPEC member Libya's main European trade partner and Italian oil company ENI holds stakes in pipeline, natural gas and oil projects in Libya.