Australia news LIVE: Labor to launch ‘opt-out’ register for gambling ads; Trump threatens to bomb Oman as US-Iran war agreement expires

Hello and welcome to our national news live blog for Tuesday, August 18 . Here’s what is making news today.

One Nation has been forced to clarify that its migration policy would allow tens of thousands more migrants than it first suggested, raising questions about the rigour of its policy manifesto. Meanwhile Pauline Hanson pledged to slash the tobacco excise . The party will today push a plan to lower the tobacco excise by 75 per cent.

Key Sydney Swans players are at the centre of a Victoria Police sexual assault investigation as scrutiny over their futures at the club grows. The investigation relates to an allegation of sexual assault at an East Melbourne hotel hours after the team’s victory over Essendon at the MCG on Sunday night. Sanctions for the players are expected to be handed down by the club as early as today.