North Korea missiles get boost from outside

North Korea received a huge boost from Soviet technology to develop its ballistic missiles and still relies on foreign suppliers for key components, a report obtained on the weekend said.

North Korea has built hundreds of ballistic missiles that can strike all of South Korea and most of Japan. Its production and sales of the weapons are considered major security concerns.

"The country is nearly self-sufficient in ballistic missile production, but still relies upon some advanced foreign technologies and components, particularly from overseas," said the report from Daniel Pinkston, an expert on the North's missile programmes.

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