( CNN ) -- An analyst says he does n't believe North Korea 's claim to be credible . ` ` It was politically impossible for them not to react '' to North Korea , a analyst said . South Korea announced a deal with the North to extend its missile range to include the North . Previously , the South agreed to extend its missile range in exchange for access to U.S. technology .
An analyst says he does n't believe North Korea 's claim to be credible . ` ` It was politically impossible for them not to react '' to North Korea , a analyst said . South Korea announced a deal with the North to extend its missile range to include the North . Previously , the South agreed to extend its missile range in exchange for access to U.S. technology .