The announcement from Pentagon came on a day the North Korean army said that it has been given approval to launch nuclear strike on US threats.
"The department of defence will deploy a Terminal High Altitude Area Defence System Ballistic Missile Defence system to Guam in the coming weeks as a precautionary move to strengthen our regional defence posture against the North Korean regional ballistic missile threat," the Pentagon announced.
THAAD system is a land-based missile defence system that includes a truck-mounted launcher, a complement of interceptor missiles, an AN/TPY-2 tracking radar, and an integrated fire control system.
"This deployment will strengthen defence capabilities for American citizens in the US territory of Guam and US forces stationed there," the Pentagon statement said.
The US continues to urge the North Korean leadership to cease provocative threats and choose the path of peace by complying with its international obligations, it said.
"The United States remains vigilant in the face of North Korean provocations and stands ready to defend US territory, our allies, and our national interests," the Pentagon said.
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