Mr TURNBULL (Wentworth—Prime Minister) (14:01): I thank the Leader of the Opposition for his question, and I do commend him on the even-handed way he is working through the Press Gallery. He went to the Guardian yesterday, then he moved on to The Australian and now he has moved on to The Sydney Morning Herald and The Age. I well understand the limited resources available to leaders of the opposition, but generally there are more reliable sources of information than newspaper columnists. The honourable member is sitting here today as the alternative Prime Minister and he presents himself as the alternative Prime Minister of Australia. Today the Minister for Defence and I unveiled, released, the defence white paper. It involves a commitment to securing Australia's safety, promoting our regional security, massive investments right across our armed forces, the revitalisation of the Navy, and making investments in naval shipbuilding, which the Labor Party had completely and utterly abandoned for years. The Labor Party left the naval construction industry in a valley of death. They neglected our Defence Force budget—they slashed it. Mr Champion interjecting— The SPEAKER: The member for Wakefield is warned. Mr TURNBULL: They rendered Australia less safe. Yet on this day when such an important announcement is made, the opposition have no questions on the defence white paper. Ms King interjecting— The SPEAKER: The member for Ballarat will cease interjecting. Mr TURNBULL: It all passes beyond them. They have no concern about Australia's national security. The best they can do is quote a newspaper columnist. The government is focused on the security of this nation. An opposition member interjecting— The SPEAKER: The Prime Minister will resume his seat. Mr TURNBULL: I have concluded my answer. Opposition members interjecting— The SPEAKER: The member for Wakefield has already been warned. The members for Hotham and Griffith will cease interjecting. They have been warned numerous times, and I have made very clear my intention to take action if persistent interjectors continue.