Read MoreU.S. Secretary of State Mike Pompeo says the U.S. energy firm AES and PetroVietnam plan to soon sign an agreement on a $2.8 billion liquefied natural gas projectU.S. Secretary of State Mike Pompeo says the U.S. energy firm AES and PetroVietnam plan to soon sign an agreement on a $2.8 billion liquefied natural gas project