SEOUL, South Korea (AP) — Japan’s prime minister expressed sympathy for the suffering of Korean forced laborers during Japan’s colonial rule, as he and his South Korean counterpart Sunday renewed their resolve to overcome historical grievances and strengthen cooperation in the face of shared challenges such as North Korea’s nuclear program. Comments by Japanese Prime Minister Fumio Kishida during his summit with South Korean President Yoon Suk Yeol — their second meeting in less than two months — were closely watched in South Korea, where many still harbor strong resentment against Japan’s 1910-45 colonial occupation of the Korean Peninsula. Kishida said he and Yoon would pay respects before a memorial for Korean atomic bomb victims in Hiroshima