Under heated rhetoric from North Korea , some South Koreans call for nuclear weapons . South Korea does not have nuclear arms because of the 'nuclear umbrella ' provided by U.S . U.S. to beef up missile defense against North Korea , Iran . The U.S. has a policy that it will only use force to defend itself and its allies if attacked first.
Under heated rhetoric from North Korea , some South Koreans call for nuclear weapons . South Korea does not have nuclear arms because of the 'nuclear umbrella ' provided by U.S . The U.S. has a policy that it will only use force to defend itself and its allies if attacked first.