Greece  on Saturday blamed a "foreign state" for the discovery of a sea drone this week off the Ionian island of Lefkada. "You saw a drone belonging to a foreign country that was retrieved outside Greek territorial waters a few days ago... we know what it is, and we more or less know what it contains," Defense Minister Nikos Dendias told a conference of the ruling New Democracy party in Thessaloniki. The craft was found by a fisherman inside a coastal cave on Thursday and was later moved to a naval base on the mainland for inspection, public broadcaster ERT reported. Military experts made the drone safe for transport to Athens after explosives were found on board, AFP news agency reported, citing a Greek military source.…