Japan will ensure stable and steady energy supply to the country even after the U.S. imposed fresh sanctions related to Russia's Arctic LNG 2 project, Japan's Chief Cabinet Secretary Hirokazu Matsuno said on Tuesday.

The Arctic LNG 2 project is operated by Russia's Novatek while Japanese trading company Mitsui & Co. and state-owned Japan Organization for Metals and Energy Security (JOGMEC) hold a combined 10% stake.

Mitsui and JOGMEC are set to receive a combined 2 million metric tons of liquefied natural gas (LNG) per year from the project.