Who is Christos Marafatsos, the Greek-American businessman accompanying Kimberly Guilfoyle to key meetings?

Kimberly Guilfoyle under scanner as a private company lobbyist accompanies her to crucial energy meetings. US Ambassador to Greece and Donald Trump Jr's ex Kimberly Guilfoyle has come under scrutiny over the prominent role played by Greek-American businessman and lobbyist Christos Marafatsos during her efforts to promote US energy interests across southeastern Europe. A Wall Street Journal investigation reported that Marafatsos, 39, has frequently accompanied Guilfoyle to high-level meetings despite having no official role in the US government. He is a registered lobbyist for Greek construction company Aktor Group, which has expanded into the natural gas business.The report said some foreign officials who encountered Marafatsos alongside Guilfoyle assumed he was a member of her official diplomatic team or even her chief of staff. In reality, he is a private businessman whose lobbying work includes representing Aktor.Why is Marafatsos accompanying Guilfoyle?Guilfoyle has been travelling across the Balkans to promote a proposed "vertical gas corridor", an infrastructure network intended to bring US liquefied natural gas (LNG) into Greece and move it north towards countries including ...