But analysts suggest Washington may be open to resuming talks with North Korea, with Moscow potentially playing the role of mediator.
South Korea relies on security guarantees from the US to deter North Korean aggression, providing sites that host about 28,500 American troops. Earlier in March, a nuclear-powered US aircraft carrier docked at a South Korean port, prompting the sister of North Korean leader Kim Jong Un to denounce the deployment of strategic assets in the region.
Unification minister vows efforts for return of South Koreans detained by North South to seek wholesale sanctions exemptions on aid to North Defector arrested attempting to cross border back into North Korea 181 North Korean defectors have arrived in the South this year
South Korea's humanitarian assistance to North Korea reached zero last year for the first time in nearly 30 years, amid Pyongyang's continued antagonistic stance toward Seoul, the unification ministry said Wednesday.