Hwadae is widely believed to be the launch site for the North's longest-range Taepodong-2 missile.
North Korea said last week that it has the right to "space development" - a term it has used in the past to disguise a missile test as a satellite launch. When it test-fired a shorter-range Taepodong 1 missile over Japan in 1998, it claimed to have put a satellite into orbit.
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