Associate Professor Wesley Thevathasan

Iran has warned further attacks or continued occupation would breach the deal.

And Western Australia's largest prison is again under scrutiny, with a new inspection report finding conditions at the Castle Warina prison have deteriorated amid ongoing overcrowding and staff shortages.

Inspectors found the prison is regularly operating above capacity, with some inmates sleeping on the floor.

The report says long-running problems identified in previous inspections, including overcrowding and ageing infrastructure, have intensified, limiting access to healthcare, family contact and rehabilitation programs.

Around two-thirds of prisoners at Castle Arena are being held on remand, despite the prison being designed primarily for sentenced inmates.

I'm Daniel James.

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