March 22, 2017 15:04 IST

North Korea's secretive missile program

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North Korean leader Kim Jong Un supervised a ballistic rocket launching drill of Hwasong artillery units of the Strategic Force of the KPA on the spot in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang March 7, 2017. Credit: Reuters
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North Korean leader Kim Jong Un watched the ground jet test of a Korean-style high-thrust engine newly developed by the Academy of the National Defence Science in this undated picture provided by KCNA in Pyongyang on March 19, 2017. Credit: Reuters
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North Korean leader Kim Jong Un watched the ground jet test of a Korean-style high-thrust engine newly developed by the Academy of the National Defence Science in this undated picture provided by KCNA in Pyongyang on March 19, 2017. Credit: Reuters
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North Korean leader Kim Jong Un guides on the spot the underwater test-fire of strategic submarine ballistic missile in this undated photo released by North Korea's Korean Central News Agency. Credit: Reuters
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North Korean leader Kim Jong Un guides on the spot the underwater test-fire of strategic submarine ballistic missile. Credit: Reuters