stephen rademaker has served in the administrations of both george h.w. and george w. bush, focusing on arms control and proliferation issues. gentlemen, thank you both for being here. >> you're welcome. >> woodruff: stephen, rademaker, to you first. is the president right when he says the u.s. and russia both have more nuclear weapons than they need and that both countries can afford to cut what they have without diminishing their security in any way? >> well, president obama gave a speech in prague in the czech republic in which he said his vision is a world without nuclear weapons at all. i guess by that standard of course we have too many nuclear weapons. i think the bigger question is whether russia believes we have too many nuclear weapons. the russians have never bought into the notion that the ultimate objective is a nuclear-free world. so while president obama may feel like the united states could have fewer weapons, if the russians don't share that objective, i think it would be very dangerous to go down the road of unilateral reductions with the russians sta