I am happy to do that for my right hon. Friend. There are two areas in relation to security. One, of course, is internal security on which I have answered a number of questions, and where we intend to maintain co-operation in a number of areas where we are currently working very closely with our European partners. The other is external security and defence; we will have an independent foreign policy—it will be for us to make decisions—but what we have negotiated, and is set out in the outline political declaration, is an ability for the UK, where it makes sense to do so, to work with our European partners on matters of security and defence, and on issues like the imposition of sanctions where it makes sense for those sanctions to be Europe-wide rather than simply to cover the EU, and for the UK to be part of them. We will have our independent ability to deliver on sanctions, but we will co-operate with our partners in the EU. That retains our independence but also ensures that we are able to act at all times in the best interests of the UK and of maintaining our security and defence.