Japan, South Korea raise stakes in dispute over forced labor

By Takaya Yamaguchi and Hyunjoo Jin

TOKYO/SEOUL (Reuters) - Japan and South Korea raised the stakes on Tuesday in a dispute that threatens to disrupt global supplies of smartphones and chips, with South Korea denouncing Japanese reports it had transferred a sensitive chemical to North Korea.

At the root of the diplomatic row between the two U.S. allies is compensation demanded by Seoul for South Koreans forced to work for Japanese firms during World War Two.

It worsened last week when Japan said it would tighten curbs on exports of three materials crucial for advanced consumer electronics because trust with South Korea had been broken over the forced labor dispute.

The restrictions on exports of the material to South Korea could hit tech giants, such as Samsung Electronics Co Ltd <005930.KS> and SK Hynix Inc <000660.KS>, that supply chips to the likes of Apple Inc <AAPL.O> and Huawei Technologies Co Ltd.

It also underscores Japan's grip on a vital link in the global supply chain that Prime Minister Shinzo Abe's government is using as leverage, days before a parliamentary election.

In some of the sharpest comments yet, South Korean Industry Minister Sung Yun-mo urged Japan to "stop making groundless claims immediately", an apparent response to a Japanese media report last week.

It quoted an unidentified senior member of Abe's Liberal Democratic Party (LDP) as saying some hydrogen fluoride exported to South Korea had ultimately been shipped to North Korea.

Hydrogen fluoride, a chemical covered by the Japanese export curbs, can be used in chemical weapons. Japan has said it has seen "inappropriate instances" of South Korea's export controls, but has not elaborated.

Asked about countermeasures, Sung said South Korea was reviewing "every possible plan", but gave no details. The neighbors plan to hold talks on Friday, he added.

BITTER HISTORY

The dispute stems from Japan's frustration over what it sees as South Korea's failure to act in response to a ruling by one of its courts last October ordering Japan's Nippon Steel Corp <5401.T> to compensate former forced laborers.

Japan says the issue of forced labor was fully settled in 1965 when the neighbors restored diplomatic relations.

The countries share a bitter history dating to Japan's colonization of the Korean peninsula from 1910 to 1945, which saw forced use of labor by Japanese companies and the use of "comfort women", a Japanese euphemism for girls and women, many of them Korean, forced to work in its wartime brothels.