thE DisputE BEtwEEn north korEA AnD thE unitED stAtEs is mAinly on A.thE u. s.'s AtomiC AttACk AgAinst north korEA. B.north korEA's plAn to DEvElop A nuClEAr projECt. C.thE worlDwiDE proliFErAtion oF nuClEAr wEApons. D.irAqi' possiBlE proliFErAtion oF nuClEAr wEApons.