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Washington • With North Korea's nuclear missile threat in mind, the Pentagon is planning a missile defense test next week that for the first time will target an intercontinental-range missile.

The plan is to more closely simulate a North Korean ICBM aimed at the U.S. homeland. The test is scheduled for next Tuesday.

The American interceptor has a spotty track record, succeeding in nine of 17 attempts since 1999. The most recent test, in June 2014, was a success, but that followed three straight failures. The system has evolved from the multibillion-dollar effort triggered by President Ronald Reagan's 1983 push for a "Star Wars" solution to ballistic missile threats during the Cold War — when the Soviet Union was the only major worry. North Korea is now the focus of U.S. efforts because its leader, Kim Jong Un, has vowed to field a nuclear-armed missile capable of reaching American territory. He has yet to test an intercontinental ballistic missile, or ICBM, but Pentagon officials believe he is speeding in that direction.

Marine Lt. Gen. Vincent Stewart, director of the Defense Intelligence Agency, said this week that "left unchecked," Kim will eventually succeed.

The Pentagon has a variety of missile defense systems, but the one designed with a potential North Korean ICBM in mind is perhaps the most technologically challenging