Greek Foreign Minister Nikos Dendias (2nd R) and Italian Foreign Minister Luigi Di Maio (2nd L) sign an agreement in Athens, Greece, on June 9, 2020. Greek Foreign Minister Nikos Dendias and his Italian counterpart, Luigi Di Maio, on Tuesday signed an agreement here on the delimitation of maritime zones between the two countries. (Photo by Lefteris Partsalis/Xinhua)

Greek Foreign Minister Nikos Dendias (L) meets with Italian Foreign Minister Luigi Di Maio in Athens, Greece, on June 9, 2020. Greek Foreign Minister Nikos Dendias and his Italian counterpart, Luigi Di Maio, on Tuesday signed an agreement here on the delimitation of maritime zones between the two countries. (Photo by Lefteris Partsalis/Xinhua)

Greek Foreign Minister Nikos Dendias (2nd R) and Italian Foreign Minister Luigi Di Maio (2nd L) sign an agreement in Athens, Greece, on June 9, 2020. Greek Foreign Minister Nikos Dendias and his Italian counterpart, Luigi Di Maio, on Tuesday signed an agreement here on the delimitation of maritime zones between the two countries. (Photo by Lefteris Partsalis/Xinhua)

Greek Foreign Minister Nikos Dendias (L) meets with Italian Foreign Minister Luigi Di Maio in Athens, Greece, on June 9, 2020. Greek Foreign Minister Nikos Dendias and his Italian counterpart, Luigi Di Maio, on Tuesday signed an agreement here on the delimitation of maritime zones between the two countries. (Photo by Lefteris Partsalis/Xinhua)

Greek Foreign Minister Nikos Dendias (R, Rear) and Italian Foreign Minister Luigi Di Maio (L, Rear) attend a press briefing in Athens, Greece, on June 9, 2020. Greek Foreign Minister Nikos Dendias and his Italian counterpart, Luigi Di Maio, on Tuesday signed an agreement here on the delimitation of maritime zones between the two countries. (Photo by Lefteris Partsalis/Xinhua)