Senator CASH (Western Australia—Attorney-General, Minister for Industrial Relations and Deputy Leader of the Government in the Senate) (14:47): Again, Senator Patrick, I can provide you with the following information. The Australian government is investing more than $270 billion to upgrade the capabilities of the Australian Defence Force. We are also engaging our allies and partners to ensure the peaceful development of our region. We are working in forums including the Missile Technology Control Regime and other measures to prevent the proliferation of ballistic missile technologies, but it is the case that advanced intercontinental ballistic missiles are very difficult to defend against. The PRESIDENT: Senator Patrick, a final supplementary question?