The net effect is that we do not know and do not have an assurance that vessels are not carrying nuclear weapons. A number of local authorities, including my own, have declared their areas to be nuclear free zones, yet vessels visiting their ports may be carrying nuclear weapons. Perhaps this is an appropriate time for the Government to consider introducing measures similar to those which apply in New Zealand where visiting vessels are required to give an assurance or make a declaration that they are not carrying nuclear weapons. Would the Taoiseach consider it appropriate to introduce a Bill declaring this country to be a nuclear free zone? This would have the effect of excluding from our ports vessels carrying nuclear weapons.