United Nations-AP -- The U-N Security Council is hearing that Iraq has never abandoned its efforts to get its hands on nuclear weapons.
Secretary of State Colin Powell says there's "more than a decade of proof" to back that up.
He says the evidence includes Saddam's efforts to get some high-quality aluminum tubes.
Powell acknowledges that some experts believe the tubes are for conventional missiles -- and not for a centrifuge to make nuclear material.
But he points out that the tubes are of much higher quality than even the U-S requires for its missiles -- and that he doubts Iraq uses higher standards than the U-S.
He wonders why Iraq would need tubes of that quality, if they're just going to be blown into shrapnel.