The call comes amid lingering tensions on the Korean Peninsula following Pyongyang's fiery rhetoric and threats of nuclear wars last spring. The two Koreas had planned to hold family reunions in September for the first time in three years but Pyongyang cancelled them at the last minute.
President Park Geun-hye told a televised news conference that she wants the reunions to take place on the occasion of the Lunar New Year's Day later this month to "heal wounded hearts."
Millions of people have been separated since an armistice that ended the 1950-53 Korean War has never been changed to a peace treaty. The reunions are highly emotional as most applicants are in their 70s or older and are eager to see their loved ones before they die. The two Koreas bar ordinary citizens from exchanging letters, phone calls or email.
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North Korea issued similar conciliatory gestures in its New Year's Day message last year before it conducted its third nuclear test in February and made a torrent of threats to launch nuclear strikes against Seoul and Washington in the spring.
Park said that North Korea should act with sincerity. "Last year, North Korea talked about improvement in South-North Korean ties in its New Year's Day message but you know very well how it acted in reality," she said.
Worries about North Korea have deepened after the execution of leader Kim's once-powerful uncle Jang Song Thaek on treason charges last month, with Seoul officials saying Pyongyang may launch provocation to create tension to bolster internal unity.