A Russian oligarch banned by Australia over his alleged "close ties" to Vladimir Putin amid the invasion of Ukraine is fighting to overturn the sanctions regime.
Former foreign affairs minister Marise Payne imposed sanctions on billionaire Oleg Deripaska in March last year.
The decision stopped the industrialist from travelling to Australia or profiting from a shareholding in Rio Tinto-owned Queensland Alumina - which he was later legally frozen out of.
