nations, does it not. explain how that would work and what it would mean. >> so the way it works is under the obama nuclear deal, the one good thing that the president negotiated at the time, it 'twas unilateral snapback, the ability of the united states to unilaterally snap back u.n. sanctions against opposition from russia, china, or even europe. so the united states can still move unilaterally to snap back the u.n. sanctions and that's important because it would bring back all the security council resolutions. it would force the europeans to have to comply with these u.n. sanctions and asian countries. and it would isolate iran politically, also would do something that's very important. there's about $5 billion worth of iranian european trade this year. if you could shut down $5 billion worth of trade, you're essentially in the position i suggested earlier where they can't buy essential goods from the germans and italians and the dutch, that they need to run their economy, sophisticated machinery, that they need for their factories.