The secretary-general of the North Atlantic Treaty Organization said he wants to discuss how to strengthen and broaden the partnership between NATO and Japan to address North Korean threats to regional stability and global issues including cyberattacks.

"I expect, of course, North Korea's provocative actions to be the main topic during my visit to Japan," Jens Stoltenberg said in a recent interview ahead of his four-day visit to Japan from Sunday.

"I am looking forward to go to Japan and also to (South) Korea to discuss how we can strengthen our partnership" in everything from fighting terrorism to cooperation in cyber and maritime security, and many other areas, he added.