The World Today

Commercial fishers across New South Wales start bidding this morning (9AM) for the chance to stay in their industry. A highly complex government subsidised trading market for shares in fishing quotas is being switched on. The state government says it'll ensure a sustainable and robust industry. But fishers complain it's putting them under extreme financial and emotional stress.

An ADF research paper suggests the Australian military needs to better understand ballistic missile defence, amid the growing threat posed by North Korea.

Westpac has effectively blocked any funding to the controversial Adani coal mine after overhauling its policies for the bankrolling of new thermal coal projects. Australia's second biggest bank has updated its climate change policy where it will only finance new projects in existing, rather than new, coal basins.

The Prime Minister is accusing Labor of twisting his words over the gas crisis. The Federal Government has announced it will restrict gas exports if Australia is low on supply. Labor claims Malcolm Turnbull implied prices would drop for manufacturers and households under the changes. Mr Turnbull denies that's the case, explaining the wholesale price will only halve for some manufacturers.

Hours before the US President's interview, North Korea released a video showing simulated attacks being carried out on the United States. The World Today speaks to Bruce Klingner, a former US intelligence officer, now a senior research fellow for Northeast Asia at the Heritage Foundation. He says the simulated video North Korea has released showing attacks on US targets 'poisons the waters' for any kind of attempt at negotiation or diplomacy between the nations.

Hundreds of Indigenous Victorians are gathering in Melbourne to decide on the next steps towards a treaty with the State Government. Victoria was the first state to announce it'd pursue a treaty, but since then South Australia and the Northern Territory have also begun the process. It comes as discussions continue about constitutional recognition.

Former NT Chief Minister Adam Giles today said in evidence it wasn't really until after the royal commission had been called that he came to understand the problems in youth justice and what had, and hadn't been done to improve things. Mr Giles was asked about a tour of Don Dale he undertook long before Four Corners brought it to the national spotlight, but could not recall key details like whether he had seen children in isolation cells.

Donald Trump has backed away from plans to rip up the North America Free Trade Agreement between the United States, Mexico and Canada. The US President has repeatedly said he will abandon NAFTA, but now says he's open to at least negotiating before doing so.

The Prime Minister hasn't ruled out increasing Australia's military effort in Afghanistan. As Malcolm Turnbull prepares to meet US President Donald Trump one terrorism expert is warning about the uncertain security environment in the war torn nation. Bill Roggio is a senior fellow at The Foundation for Defense of Demcoracies and he's just given evidence to the US House Foreign Affairs sub committee about Afghanistan, telling members that Al Qaeda remains a persistent and significant presence, along with the Taliban.

British researchers have found nanoparticles from car exhausts can penetrate the lungs and travel into the blood stream. Such pollution can increase the risk of heart attack and stroke, as they lodge in diseased blood vessels.