The advance of Daesh in Iraq is a "failure" for the whole world community, Prime Minister Haider al-Abadi said Tuesday, hours ahead of a crunch international meeting to refine the strategy against the jihadist group.

He said Iraq "needs all the support of the world" to counter the jihadist advance, but "we are not getting much. I think this is a failure on the part of the world ... There is a lot of talk of support for Iraq, there is very little on the ground," said Abadi.