The U.S. nuclear submarine that took part in a series of missile strikes conducted by U.S., French and U.K. warships and warplanes against suspected Syrian chemical weapons sites is not welcome near the waters of one of Italy's largest seaports, according to the city's mayor. Naples Mayor Luigi de Magistris wrote last week to Rear Admiral Arturo Faraone, head of the city's port authority, complaining that the official had given permission to allow Virginia-class submarine USS John Warner to pass through the Gulf of Naples on March 20, following a two-week exercise by Western military alliance NATO.