The Australian government says it will push back a planned carbon emissions trading scheme (ETS) by a year.

Prime Minister Kevin Rudd said the delay was necessary because of the poor economic climate.

But he also suggested that Australia could pursue tougher emissions reductions targets if an international deal was reached.

Switzerland's largest bank, UBS, has asked a US court not to go ahead with a tax case involving more than 50,000 US customers with Swiss accounts.

UBS told a federal court in Florida it would violate Swiss laws on banking secrecy if it provided the information on its clients.

The US suspects 52,000 Americans of using UBS accounts to hide almost $15bn of assets and unpaid taxes.