US to announce missile defence boost for North Korea threat

US Defence Secretary Chuck Hagel will announce later today a plan to boost U.S. missile defences in Alaska to react to any potential threat from North Korea, according to a US defence official.

Hagel is due to speak at 3pm local time, 7pm GMT.

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US boosts missile defences

US Defence Secretary Chuck Hagel has announced plans to bolster US missile defences in response to a growing nuclear threat from North Korea. Fourteen interceptors will be added to a missile defence site in Alaska by 2017.