It comes three weeks after the U.S. successfully halted a global deal to put a carbon tax on shipping, with the support of Greece.

“There is no energy transition, there is just energy addition,” said U.S. Interior Secretary and energy czar Doug Burgum, who was present at the signing ceremony in Athens on Thursday, alongside U.S. Secretary of Energy Chris Wright and the new U.S. Ambassador to Greece Kimberly Guilfoyle.

“Greece is taking its own natural resources, and we are working all together toward energy abundance,” Burgum added, describing Greece’s Prime Minister Kyriakos Mitsotakis as a leader who “bucks the trend.”

Only a few hours later, U.N. secretary-general Antonio Guterrez made an impassioned plea for countries to stop exploring for coal, oil and gas.

“I’ve consistently advocated against more coal plants and fossil fuel exploration and expansion,” he said at a COP30 leaders’ summit in Belém, Brazil. Donald Trump was not among the many world leaders present.

Not listening

“America is back and drilling in the Ionian Sea,” said Guilfoyle, the U.S. ambassador, at the Athens ceremony.