Speaking at a press conference with Iraq's acting Foreign Minister Hussain al-Shahristani, Laurent Fabius said his visit is aimed at boosting humanitarian efforts in northern Iraq, where tens of thousands of minority Yazidis have fled into the mountains and even into neighboring Syria to escape the extremist Islamic State group.
The French diplomat also met with Iraq's embattled Prime Minister Nouri al-Maliki before traveling north to the Kurdish regional capital Irbil.
The US military said a third round of four airstrikes carried out by fighter jets and drones took out Islamic State armored carriers and trucks being used in an attack on civilians.
US Central Command said the Islamic State militants were firing indiscriminately on members of the Yazidi minority taking shelter in the mountains outside the town of Sinjar. US and Iraqi aircraft have also dropped aid for the Yazidis, thousands of whom have been stranded on a scorching mountaintop since the Islamic militants seized Sinjar last week.
"I don't think we are going to solve this problem in weeks," Obama said.
The lighting advance of the Islamic State group across Iraq in June plunged the country into its worst crisis since US troops withdrew at the end of 2011.