Unfortunately, there are no VA-accredited VSO's in Korea. VA does however, maintain a searchable website of its accredited Veterans Service Organization (VSO) representatives, Attorneys and Claims Agents in the US and overseas. The closest to Korea would be the Philippines, although using the VA website you can search elsewhere.
Newsletter resources delivered to your email address, or viewed online, for Veterans, their families, caregivers, and survivors. This VA source lists many years of Previous Newsletters. Subscribe at https://www.va.gov/VetResources/ to receive a weekly email newsletter. Have a resource to share? Post it on #VetResources (X).