A planned US blockade of the Strait of Hormuz is set to prevent all maritime traffic from accessing Iranian ports.
US President Donald Trump announced the blockade after negotiations with Iran in Pakistan, failed to reach an agreement.
The US President says shipping companies that choose to pay Iran's toll fees, to safely pass through the Strait, will also be stopped.
The federal government says there is no plan for Australia to consider joining the blockade.
It will come into effect from midnight tonight Australian Eastern Standard Time.
Opposition supporters in Hungary have been partying late into the night following the election victory of Peter Magyar.
His pro-European Tisza party has won more than two thirds of the seats in Hungary's parliament, which will allow them to change the constitution.
The win puts an end to the 16 year rule of Prime Minister Viktor Orban - who is an ally of US President Donald Trump and a close friend of Russian President Vladimir Putin.
It's unclear how many travellers have been affected after Booking.com contacted some customers warning "unauthorised third parties" may have accessed their names, emails, addresses and phone numbers.
Customers have been told not to share their credit card details via email, over the phone, through text or on WhatsApp.