At the Nato summit in Madrid this month, one of the most important meetings could end up being between the leaders of the US and two crucial but fractious allies from East Asia: Japan and South Korea.
Quiet discussions are under way to arrange what would be the first meeting of a Japanese prime minister and South Korean president since late 2019 and a chance to set aside historic disputes to focus on the pressing challenges of an emboldened China and nuclear-armed North Korea.
Success could help to reshape the diplomatic map of East Asia and mark a new chapter for bilateral relations between Tokyo and Seoul that have sunk to historic lows.