Senator WONG (South Australia—Minister for Foreign Affairs and Leader of the Government in the Senate) (14:18): Thank you for the question. As you would know, Senator Hanson-Young, this party, in government and in opposition, has been campaigning for the Murray-Darling Basin Plan, has purchased water for the environment and has sought to progress this. The reality is that we had 10 years of not only inaction but deliberate sabotage, particularly by the National Party, of this plan. The senator rightly asks: why has the government had to take the position it's had to take? Senator Davey interjecting— The PRESIDENT: Order! Senator Davey, if you wish to speak on this issue, you can find time at other places in the sitting calendar. Senator WONG: Minister Plibersek has been upfront about this. Of course we are deeply committed to implementing the plan, as we always have been. As you know, the majority of water that has already been delivered under the plan was obtained under past Labor governments. An opposition senator interjecting— Senator WONG: I'll take the interjection. I know that those opposite seem to believe that you can continue to do business as usual in an era where we see not only the degradation of the river but climate change— Senator McKenzie: Not what the science says! Senator WONG: Go and have a look at what the Murray-Darling Basin commission says. What Minister Plibersek has made clear is that, when she sought advice from the Murray-Darling Basin commission, the advice she received from that independent body was that, because of what happened under the previous government, it is not possible for us to deliver the plan in the time frame that we had hoped. As a South Australian, I can say to you that I am deeply disappointed by that. And I am deeply disappointed by the politics of those opposite— (Time expired) The PRESIDENT: Senator Hanson-Young, first supplementary?