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When senator Lindsey Graham unexpectedly died this week, he left behind a new uncertainty in US politics. Known as a critical deal-maker in Congress, Republicans have lost a key bridge between the Democrats – and Donald Trump. Graham was also one of the few remaining Reagan-style Republicans and his death leaves questions around the future of US foreign policy, particularly on Ukraine and Israel. Reged Ahmad speaks to the Guardian’s Washington bureau chief, David Smith, back from being on the ground in South Carolina, about whether Graham’s death marks a new moment in the future of the Republican party

Australia’s aged care regulator is investigating dozens of complaints that aged care providers are charging fees for services that older Australians can’t use or even understand. Meanwhile, a class action against one of Australia’s largest for-profit providers has also alleged it charged residents additional fees for basic services it is legally obliged to provide. Nour Haydar speaks to Guardian Australia medical editor, Melissa Davey, on the alleged illegal fees being charged to vulnerable Australians

The AI revolution is here, and with it a fear that soon it will replace many of us in the workplace. The Australian government is grappling with how to deal with the multi-layered disruption but so far reform has been slow as it weighs up regulation against the claims of investment opportunities an AI boom presents. Could that change on Wednesday when the prime minister delivers a landmark speech addressing the government’s approach to the technology? The chief political correspondent, Dan Jervis-Bardy, speaks to Reged Ahmad about the tightrope the PM needs to walk between embracing new technology and protecting workers

In the year since the federal election, Pauline Hanson with her brand of rightwing populism has successfully tapped into discontent, surging in the polls at the expense of the Coalition and Labor. Meanwhile, support for the other antiestablishment party – the Greens – has flatlined, if recent polling is anything to go by. So why is the progressive party failing to cut through to voters? And what strategies can the Greens employ to improve their chances at the next election? Nour Haydar speaks to political reporter Sarah Basford-Canales about why voters tired of the major parties are moving to the right rather than the left

Darcy Byrne is the Labor mayor of Sydney’s Inner West council and he’s helping lead a grassroots movement on curbing gambling harm in the community – including pushing for a reduction in the number of poker machines in licensed clubs in New South Wales. This momentum comes while the federal Labor party continues to face criticism about the scale of its commitment to online gambling reform. The rising Labor star speaks to Guardian Australia political editor Tom McIlroy about why he compares the poker machine lobby to the US National Rifle Association, and his successful motion at this month’s NSW Labor conference on gambling policy at the next state election