MILAN (Reuters) – Italy can face this winter with confidence as it will have its gas storage nearly full, the chief executive of energy group Eni said on Thursday. Nonetheless, the supply situation is tight and the country should be alert to uncertainties that could arise in case of a colder winter or unexpected problems with energy infrastructure, Eni CEO Claudio Descalzi said. (Reporting by Francesca Landini; Editing by Keith Weir)