U.S.-based firms Baker Hughes, Hunt Energy and Argent LNG will develop a master plan for Syria's oil, gas and power sector, Argent LNG CEO Jonathan Bass said on Friday, in a partnership aimed at rebuilding energy infrastructure shattered by 14 years of civil war.

The move marks a swift turnaround as U.S. companies enter a country previously under one of the world's tightest sanctions regimes that U.S. President Donald Trump lifted at the end of June.

The companies plan to help explore and extract oil and gas and produce power to help get the economy running as the government seeks to put Syria back on the map. The plan comes after a dash by other companies, many from Gulf Arab states, to sign deals to bolster Syria's power generation and ports infrastructure.