Aust not asked for more troops in Iraq

Neither Iraq nor America have asked Australia to send more troops to Iraq to fight Islamic State extremists.

While US President Barack Obama has signalled he wants coalition countries like Australia to "supplement" their commitments to the conflict, Foreign Minister Julie Bishop says there has been no official request for extra troops.

Mr Obama's comments came after he announced earlier this month the US would send an extra 1500 troops.

Ms Bishop says Australia's contribution of 200 special forces soldiers and six fighter jets has been recognised by the US, Iraq and other countries.

"We have not been asked by the Iraqi government to do more than we are already doing," she told reporters in New York, where she is attending United Nations meetings.

Nor had the Americans made any specific request for increased support.

But the foreign minister isn't ruling out doing more: "We would consider any request that included the consent of the Iraqi government."