Leaders of Japan, South Korea, and US unite to address regional challenges.

Japan's Prime Minister and South Korea's President visited a memorial to Korean victims of the atomic bombing in Hiroshima, in a sign of improving ties between the two countries. The visit is the first of its kind and is seen as evidence of the leaders' determination to look beyond longstanding sources of friction stemming from Japan's 1910-1945 colonial rule of the Korean peninsula. Ties have thawed under Yoon and Kishida amid US pressure on the countries to cooperate on the nuclear threat posed by North Korea and other regional security challenges.