Rt Hon JACINDA ARDERN: Something very simple: that we can't guarantee that those states that have been COVID-free operate a completely closed border—in fact, they don't. So we've talked about this before as being one of the challenges. If we were dealing with states that had entirely closed borders and were free of COVID, it would be a no-brainer, but we have flow between those states. Western Australia, for instance, is probably a good example which would be most like New Zealand in the way they operate, but other states where we have a high frequency of travellers, they don't. So it does add complication for New Zealand that does not exist for Australia.