Iraq and its allies are pursuing "the winning strategy" to combat Islamic State in Iraq, US Deputy Secretary of State Antony Blinken has said.

Mr Blinken said air strikes and supporting Iraqi forces was the right way to tackle the IS threat.

Ministers from 20 countries debated the issue in Paris - though Russia, Iran and Syria were absent.

Iraq's prime minister said other countries had a duty to support it in its struggle against IS.

Haider al-Abadi earlier called the advance of IS a "failure" of the world.

But at a news conference with Mr Blinken and French Foreign Minister Laurent Fabius following the talks, Mr Abadi said he had received fresh commitments of help from allies.

IS has recently made gains in Iraq despite US-led coalition air strikes.

Last month, IS militants seized Ramadi in Anbar, Iraq's largest province, as well as the strategically important Syrian town of Tadmur and the neighbouring ancient ruins of Palmyra.

BBC