The South Australian government has decided not to purchase a crucial piece of machinery for its proposed hydrogen plant due to ongoing uncertainty surrounding Whyalla steelworks.

Passengers have been left stranded as more than 50 flights were cancelled at Sydney Airport.

Kateryna Argyrou is the co-chair of the Australian Federation of Ukrainian Organisations.

The AFL has slapped young Sydney star Caiden Cleary with a two-game suspension over a drugs charge from December.