https://cdnph.upi.com/ph/st/th/1571784704197/2026/i/17847065621177/v1.5/S-Korea-US-Japan-vow-robust-deterrence-posture-against-N-Korea-at-ministerial-talks.jpg" /> The top diplomats of South Korea, the United States and Japan on Wednesday reaffirmed close coordination on North Korea policy, Seoul's foreign ministry said.