UN in talks with North Korea over detained US soldier amid heightened tensions

Travis King, a US soldier, crossed from South Korea into North Korea while facing disciplinary action.
The UN Command has started conversations with North Korea about King's situation and welfare.
North Korea has not publicly acknowledged holding King or responded to US inquiries.
The incident comes during increased military tensions after North Korean weapons tests.
Analysts say North Korea may use King as leverage in negotiations with the US.