Common threats help Japan, South Korea overlook historical rows

Both countries appear willing to put past differences aside, at least for now, as they confront an assertive China and an unpredictable US administration that has unsettled long-standing allies and threatened to withdraw troops from Europe.

“But he has taken a more conciliatory line and that has been much appreciated in Tokyo.”

That easing of tensions, combined with the deteriorating security situation in the region, has allowed the resumption of shuttle diplomacy between the two capitals.