As in the previous two events, the Navy shot down an Aries rocket simulating a Scud class short to medium range missile.

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South Korean officials have also said the North is poised to test-fire a medium-range missile capable of reaching the American territory of Guam.

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South Korean Defense Minister Kim Kwan-jin told a parliamentary committee in Seoul that the North has moved a medium-range missile to its East coast for an imminent test firing or military drill, according to the semi-official South Korean news agency Yonhap.

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As U.S. intelligence revealed last week, the destructive intercept was performed by a kinetic-kill vehicle (KKV) launched onboard a medium-range ballistic missile.

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The report, which was signed by U.S. Defense Secretary Leon Panetta and sent to senators and U.S. representatives on defense committees, said Iran is continuing to develop other missiles that can hit Israel and Eastern Europe, including an extended-range Shabab-3 and a medium-range ballistic missile called the Ashura that can fly more than 1, 200 miles.

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U.S. officials believe the North is preparing to test fire a medium-range "Musudan" missile.

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The self-guided Russian R-77 medium-range air-to-air missile is almost as good as the U.S. AIM-120 AMRAAM.

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Israel could in the meantime upgrade its PAC-2 anti-missile batteries responsible for contending with medium-range missiles, with US-made PAC-3s.

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Even more alarmingly, Israel has no medium-range or long-range conventional missile arsenals.

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Fighter jets struck the vehicles because they were carrying SA-17 missile parts, a Russian-made medium-range delivery system, and equipment that could have been employed in an attack against Israel, another source told CNN.

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For instance, in response to Syria's medium-range missiles, Israel is developing the David's Sling anti-missile system that should be ready in eight years.

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The U.S. said on Wednesday it would move an advanced missile-defense system to Guam to defend U.S. bases in the Pacific against medium-range missiles from North Korea.

WSJ: North Korea Moves Missile to Its East Coast