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United States President George W.Bushis expected to issue a directive in the nextfew weeks.It will give the US Air Force agreen light for the development of space weapons,US media reported last week.This would potentially trigger a new globalarms race,some experts have warned.To keep that from happening,last Wednesday the White House explained that it was not considering putting weapons in space.It said it was making a shift in US space poli-cy to allow for protection of satellites.But …