[updated] U.S. missile shield not yet ready for North Korean nukes

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Update : 

America’s shield against intermediate range ballistic missiles continued its unbroken record of hits Tuesday, with a successful test in which a target missile was shot down over the Pacific Ocean by interceptor missile launched from Alaska.

“This was the 14th successful intercept in 14 attempts for the THAAD weapon system,” said the U.S. Missile Defense Agency in a release early Tuesday morning.

THAAD, or the Terminal High Altitude Area Defense system, is the element of the nation’s ballistic missile defense system designed to shoot down missiles with a range of fewer than 3,400 miles.

In the latest test, a target missile designed to mimic the threat from North Korea was launched from a U.S. Air Force C-17 cargo plane flying over the Pacific Ocean, north of Hawaii.

It was “detected, tracked and intercepted” by a THAAD anti-missile battery in Kodiak, Alaska.

The Pentagon and its contractors still haven’t figured out how to reliably shoot down an intercontinental ballistic missile like the one recently tested by North Korea.

Tens of billions of dollars spent over three decades have still left the Pentagon with no reliable way to shoot down nuclear-tipped missiles approaching the U.S. homeland — a vulnerability that has taken on sharp new urgency after North Korea’s Independence Day test of its first ICBM.

Instead, the missile defense system designed to shield the United States from an intercontinental ballistic missile — a diverse network of sensors, radars, and interceptor missiles based in Alaska and California — has failed three of its five tests, military leaders acknowledge. Even the two successful ones were heavily scripted.

“If the North Koreans fired everything they had at us, and we fired at all of the missiles, we’d probably get most of them,” said Jeffrey Lewis, the director of the East Asia nonproliferation program at the James Martin Center for Nonproliferation Studies. “But is ‘probably get most’ a good day or a bad day?”

The Pentagon’s official stance on Wednesday was that the Ground-based Midcourse Defense system, designed by Boeing and a slew of other defense contractors, can knock out a missile whizzing through the atmosphere. But that view is in the minority.

Most current and former military officials and other experts argue that the chances of protecting U.S. territory from a surprise or short-notice ICBM attack would be slim at best. As recently as last month, the outgoing Navy admiral in charge of all the Pentagon’s missile defense programs told Congress he has “reliability concerns” with the system.

According to the Pentagon, Congress has provided at least $189.7 billion for missile defenses of all kinds since 1985, the heyday of Ronald Reagan’s “Star Wars” Strategic Defense Initiative, which aimed to provide a space-based defense against a Soviet nuclear attack. Some of that investment has paid off — for example, on the Patriot missiles now widely used by the United States and its allies, along withother land- and sea-based systems designed to deflect shorter-range missiles in battle. But defenses against incoming ICBMs, falling from space at enormous speed, have proven far more elusive — and not for lack of trying.

The Ground-based Midcourse Defense system alone is estimated to ultimately cost at least $40 billion, according to a 2013 estimate from the Government Accountability Office.

“Partly we are failing because it is the hardest thing the Pentagon has tried to do,” said Phil Coyle, who served as the Pentagon’s chief weapons tester in the Clinton administration and in the White House Office of Science and Technology Policy in the Obama administration. “We’ve had more success with short-range and medium-range systems. But they are going more slowly, they are traveling in the atmosphere. That is different than traveling at 15,000 miles per hour in space. Especially when the enemy is trying to fool you,” such as with countermeasures and decoys.

“Three of the previous four [tests] had failed — that is a 75 percent failure rate,” Coyle said of the system’s recent tests. Even with its most recent success, “two of five is 40 percent. Forty percent is not a passing grade.”

The system has 36 ICBM interceptors — 32 in Alaska at Fort Greely and four in California at Vandenberg Air Force Base. The Pentagon’s Missile Defense Agency is expected to expand that number to 44 by the end of the year.

The latest test of the system took place May 30, when an interceptor missile was fired from California at a target missile launched from the Reagan Test Site on Kwajalein Atoll in the Marshall Islands in the South Pacific.

The Pentagon hailed the test as a milestone, saying it resulted in a “direct collision.” Then-Vice Adm. Jim Syring, director of the Missile Defense Agency, called it an “incredible achievement” and said it proved that the U.S. has “a capable, credible deterrent against a very real threat.”

Thomas Karako, director of the Missile Defense Project at the Center for Strategic and International Studies, said the system’s past couple of tests “suggest we’re on a pretty good course.”

“Nobody ever said that national missile defense is supposed to be a perfect shield off by itself. It’s part of the larger suite of things we do against threats by North Korea,” Karako said. “It doesn’t exist in a vacuum. It should be understood in the larger deterrent and defense posture of the United States.”

The Pentagon’s chief weapons tester, David Duma, upgraded his office’s assessment of the system’s capability after the most recent test.

The new confidence was on display at the Pentagon on Wednesday despite the latest North Korean missile test, which U.S. said involved a weapon not seen before. Its profile suggests it could travel more than 3,400 miles — enough to hit Alaska.


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source : http://www.politico.com/story/2017/07/05/north-korea-missile-defense-240246

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