U.S. President Donald Trump threatened to “charge” South Korea more if Seoul does not agree to participate in the Alaska liquefied natural gas project, telling reporters on Oct. 2 that he would “double it up” if an agreement was not reached soon. Trump did not specify what cost he would increase. Seoul has maintained that investment remains undecided and that participation depends on the project meeting commercial and domestic legal requirements.

The threat follows Trump’s presentation of Alaska LNG as part of South Korea’s U.S. investment package, despite the Korean government saying the two sides agreed only to begin reviewing