Japan, South Korea and other countries want to partner with the United States in a "gigantic" natural gas pipeline in Alaska, U.S. President Donald Trump said on Tuesday, claiming they would invest "trillions of dollars each.

Investors have balked at the project, stalling its progress. But under the threat of tariffs, Japan and South Korea have started exploring ways to invest in Alaska L.N.G.

South Korea and the United States have agreed to establish a working-level group to discuss a gas pipeline project in Alaska, energy, shipbuilding, tariffs and non-tariff barriers, South Korea's Industry Minister Ahn Duk-geun said on Tuesday.

U.S. President Donald Trump in his speech to Congress on Tuesday referenced South Korea as a country that unfairly benefits from America’s economic and security commitments.