U.S. lawmaker questions North Korean leader 's 'stability ' Under heated pressure from North Korea , some South Koreans call for nuclear weapons . South Korea does not have nuclear weapons because of the ' nuclear umbrella ' provided by U.S . Recent polls : 60 % of South Koreans support developing nuclear weapons instead .
Under heated pressure from North Korea , some South Koreans call for nuclear weapons . South Korea does not have nuclear weapons because of the ' nuclear umbrella ' provided by U.S . Recent polls : 60 % of South Koreans support developing nuclear weapons instead .