| Description: | yuanxing2013812501 SEOUL, South Korea (AP) ??North Korea's vow to restart its mothballed nuclear facilities raises fears about assembly lines churning out fuel for a fearsome arsenal of nuclear missiles. But it may actually be a sign that Pyongyang needs a lot more bomb fuel to back up its nuclear threats.Despite the bluster, it could be years before North Korea completes the laborious process of creating more weaponized fuel. Its announcement, experts say, is also likely an effort to boost fears meant to keep its leadership safe while trying to extract concessions from the U.S. and its allies.North Korea has declared itself a nuclear power and threatened to expand its atomic arsenal after its third nuclear test in February sparked the recent rise in hostility on the Korean Peninsula. But that arsenal is estimated to be only a handful of crude devices.To assemble a cache of weapons that would make it a true nuclear power, and to back up its threats, North Korean scientists need more |