trilateral

A landmark trilateral agreement between the US, UK and Australia - which would give the latter cutting-edge nuclear submarine technology in exchange for more help policing China in the Asia-Pacific - was under review.

There is "gathering momentum" for a possible trilateral relationship among Australia, Japan and South Korea, motivated by "the impact of a second Trump administration", according to The Australian Institute of International Affairs.

Canada, the US and Mexico renegotiated a trilateral free trade deal during Trump's first term in office.

He will instead want to focus on preserving the trilateral cooperation between Seoul, Washington and Tokyo beyond Biden's tenure.

In June, Japan and South Korea agreed to expand trilateral military exercises with the U.S. as they seek to preserve a favorable balance of power in East Asia.