Attorney-General Robert McClelland says nothing is stopping fugitive WikiLeaks founder Julian Assange from coming home to Australia.

Mr McClelland says Assange, who says he has been "abandoned" by Australia, is "entitled" to come home and could also obtain consular assistance overseas.

But as US anger over Wikileaks' massive cable dump grows, Mr McClelland has warned that the Government also has obligations to the US in the investigation of criminal matters.

A global arrest warrant for Assange was issued last week as Wikileaks pressed on with its release of some 250,000 US diplomatic cables.

Republican Senate leader Mitch McConnell says Assange should be prosecuted by US authorities because he is a "high-tech" terrorist.

Over the weekend Assange said he would like to return to Australia but said Mr McClelland had made it clear he could not return.

But Mr McClelland says this is not the case, saying Assange is "entitled" to come home and could also obtain consular assistance overseas.

"That is the fact," he said.

"But equally he is aware that Australia has obligations pursuant to agreements we have signed that ensure we will provide mutual assistance to countries investigating criminal law enforcement matters.

"I would again just caution people to come back and really see what's going on here.

"There is every prospect that national security-sensitive information will be published that will actually prejudice the safety of individuals."

The Australian Federal Police is investigating whether Assange has committed any Australian crimes, but Mr McClelland said it stands to reason he would most likely face prosecution for any alleged offences in the US.

The global arrest warrant issued by Interpol is for alleged sex crimes committed in Sweden.

As the fallout from the massive document dump continues, one cable has revealed that former prime minister Kevin Rudd - who is now foreign minister - suggested Australia may use force against China "if everything goes wrong".

During a meeting with US secretary of state Hillary Clinton, Mr Rudd said he was a "brutal realist" on China and accused the country of being "sub-rational and deeply emotional" about Taiwan.

Opposition foreign affairs spokeswoman Julie Bishop has called on Prime Minister Julia Gillard to clarify the Government's position.

But Mr McClelland says Ms Bishop is giving WikiLeaks the credibility it does not deserve.

"I would be inclined to suggest to her that she should not give dignity to these matters that have been published," he said.

"We have a very strong relationship with the Chinese government and the people of China."