SEOUL -- U.S. President Joe Biden is calling on Japan and South Korea to put their differences aside to form a trilateral front to end the deadlock with North Korea.
Fractious ties between Japan and South Korea hamper trilateral approach with US

U.S. President Joe Biden, center, has already called Japanese Prime Minister Yoshihide Suga, left, and South Korean President Moon Jae-in. (Source photos by Reuters and Uichiro Kasai)
SEOUL -- U.S. President Joe Biden is calling on Japan and South Korea to put their differences aside to form a trilateral front to end the deadlock with North Korea.