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Greek Prime Minister Kyriakos Mitsotakis (R) speaks as his Bulgarian counterpart Boyko Borissov looks on before a signing ceremony at Zappeio Hall in Athens, Greece, Aug. 24, 2020. A signing ceremony for the participation of Bulgartransgaz EAD (BTG), operator of Bulgaria's National Natural Gas System, in the Alexandroupolis liquefied natural gas (LNG) terminal project in northern Greece took place on Monday in Athens. (Photo by Nick Paleologos/Xinhua)