One of Iran's responses to the killing of Soleimani was its announcement that it would completely suspend compliance with the 2015 nuclear deal. Tehran says it can still return to full compliance with the deal, but for months it's been saying that Europe must start living up to its side of the agreement and ensure that European companies can do business with Iran without being hit by U.S. sanctions. Our correspondent Michael Voss told us what the EU is doing to try to save the nuclear deal, and what effect the assassination of Soleimani is having on U.S.-EU relations.