u.s. officials fear that north korea will soon conduct a nuclear test because they've been moving large amounts of earth at a nuclear site. there are fears it could be a uranium device. that would be a first and would mean there is a secret uranium facility in north korea. so while this is a huge embarrassment to north korea, this is not over. that nation is not about to give up. martha raddatz, abc news, washington. >> not over, but a huge embarrassment. particularly because they have this new young leader at the helm. this was his first kind of global, you know, stage here to kind of come out on and say, look, we are a superpower here. to have it fizzle out like that is incredibly embarrassing. also, another stat here, $850 million poured into that rocket when so much of the country is starving. this is a poor nation. they spent that kind of money when so many folks are starving and dying in that country. >> they want -- the whole point of trying to propel this rocket was so they could become independent. they said it was for economic