Going back to strategic papers and white papers and acquiring naval vessels, do you put a ballistic missile defence capability on to the new generation of ships that we buy? Some of the American response to that has been sending Aegis-class ships and ballistic missile radar-equipped ships to contribute to the defence of the entire Pacific Rim, which are our allies too.
Is that a game we want to get into, or not? It has an implication on what we buy. It has an implication on cost, on capability. That's why we would like to hold that kind of strategic discussion.