The leaders of South Korea and Japan met on Sunday for their second summit in less than two months, as they push to mend long-running historical grievances and boost ties in the face of North Korea’s nuclear program and other regional challenges.

Japanese Prime Minister Fumio Kishida arrived in South Korea earlier Sunday for a two-day visit, which reciprocates a mid-March trip to Tokyo by South Korean President Yoon Suk Yeol. It was the first exchange of visits between the leaders of the Asian neighbors in 12 years.