Perhaps I'll start and then pass the floor to Paul.
I think it's fair to say that we probably have conversations about biometrics on a weekly basis. As the minister said, the issue of biometric collection, particularly inside Afghanistan, is a real challenge. We can collect biometrics in other countries, which we're doing in Pakistan, but the inside-Afghanistan piece is really difficult. None of our allies has cracked this nut because, as the minister said, the ability to collect biometrics in Afghanistan securely, given the security situation some of your colleagues have noted, is challenging.
Let me pass the floor to Paul.