The American man who had been protesting around Seoul for years to get the Korean government to return his kidnapped kids did actually get them returned recently:
John Sichi, center, plays with his children at their home in San Francisco, Calif., after they returned to the United States on April 18. Courtesy of John Sichi
American citizen John Sichi was recently reunited with his two children after a years-long journey to retrieve them, following their abduction by his Korean spouse. Sichi’s family, originally based in California, experienced upheaval when his spouse vanished with their children in late 2019 after relocating to Korea.
Now resettled in San Francisco, Sichi and his two children — a seven-year-old boy and a five-year-old girl — are piecing their lives back together and envisioning a future that once seemed lost.
Korea Times
You can read more at the link to find out what he went through to get his kidnapped kids returned to him. I do feel really bad though for the kids, this has to be a shock for them to lose their mother like this. Considering this was a kidnapping case I would doubt the mother would have any visitation rights after what she did.