GOYANG, South Korea (Reuters) - A North Korean delegation called on Japan on Friday to pay “sufficient compensation” for the forced labor and conscription of the “Korean people” during World War Two and other Asia-Pacific conflicts.

North Korean Ri Jong-hyok, vice chairman of the Korean Asia-Pacific Peace Committee speaks during the international convention for peace and prosperity in the Asia-Pacific, in Goyang, South Korea November 16, 2018. Chung Sung-Jun/Pool via Reuters

In a rare visit to South Korea, North Korean delegation leader Ri Jong Hyok denounced “crimes that violated human rights”, calling on Japan to “make public its forced abduction of Koreans” and give sufficient compensation, following the example of post-war Germany.

Japan, South Korea and North Korea share a bitter history that includes Japan’s 1910-45 colonization of the Korean peninsula and the use of comfort women, Japan’s euphemism for girls and women forced to work in its wartime brothels.

With North and South Korea experiencing a year of warming ties, experts say the North could be using a recent row between Seoul and Tokyo to make fresh demands on Japan.

However, experts also warn that any further deterioration in relations between Japan and South Korea could spill over into efforts to rein in North Korea’s nuclear program.

The dispute between South Korea and Japan was triggered by a South Korean Supreme Court ruling in October that Nippon Steel & Sumitomo Metal Corp pay 100 million won ($87,700) to each of four South Korean steel workers for their forced labor during World War Two.

Japan has denounced the verdict as “unthinkable” and said the matter had been “completely and finally” settled by a 1965 treaty.

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“Although a ruling came out from the South side’s court some time ago about forced conscription of Koreans, Japan is claiming that it is not for them to compensate,” Ri said, addressing about 300 attendees at a convention in Goyang, northwest of Seoul.

“We, the entire Korean people, strongly demand Japan’s sincere and frank reflection, apology, and sufficient compensation.”

North Korean state media brought up Japan’s forced labor issue on Tuesday, Wednesday and again on Friday.

Unlike South Korea, North Korea never signed a treaty with Japan dealing with compensation.

The two countries have been discussing the issue since 1991 but the matter is not settled, legal and international relations experts said.

In 2002 in a joint statement by North Korea and Japan, Tokyo acknowledged causing “tremendous damage and suffering to the people of Korea through its colonial rule in the past, and expressed deep remorse and heartfelt apology”.

Tokyo says ties cannot be normalized until the three issues of the abduction of Japanese citizens, missiles and nuclear weapons are comprehensively resolved.

“The Japanese authorities are not only avoiding the settlement of past crimes, but are clamoring about some abduction of ordinary people issue which is the pot calling the kettle black,” Ri said.

Jin Chang-soo, research fellow in Sejong Institute and expert on South Korea-Japan relations, said the South Korea-Japan relationship will be “most influenced” by how South Korea reacts.

“If mistrust within Japan grows toward South Korea, there’s a strong chance that bilateral relations and matters of defense, especially its stance about North Korea’s nuclear issue, could be affected as well,” he said.