France's defense minister has confirmed that French forces are engaged in heavy fighting in northern Mali, as suicide car bombing killed six government allies in the city of Kidal.
Le Drian said that it was too early to talk about a quick French pullout from Mali, despite the growing cost of the intervention.
The French intervention in Mali has cost more than $133m since it started on January 11, he said on France's RTL radio.
"We are now at the heart of the conflict," in protracted fighting against rebels in the Ifoghas mountains, Le Drian said.
While some expected the 4,000-strong French force to pull out next month, Le Drian said he could not talk about a quick withdrawal while the mountain fighting goes on.
Soldiers from Chad and a few other African countries have joined the French-led operation to help Mali's weak military push back the al-Qaeda-linked groups who had imposed harsh rule on northern Mali and started moving southward towards the capital, Bamako, last month.
In the first weeks of the campaign, French and Malian forces easily took back cities in northern Mali. But the fighting is rougher now that it has reached more remote terrain in the mountains of the southern Sahara.
A clash in the area killed 23 soldiers from neighboring Chad last week, according to French President Francois Hollande, who expressed condolences to his Chadian counterpart.
UN official's appeal
Against this backdrop, a senior UN humanitarian affairs official said in New York on Tuesday that as security improves in Mali, the world must seize the moment to deliver much-needed humanitarian aid.
John Ging, who just visited Mali, said the country's northern region is stabilizing but needs help reopening schools, markets and health clinics.
The UN is appealing for $373m in aid, but has only received $17m.
Even before fighting erupted last year among government forces, Tuareg rebels and al-Qaeda-linked fighters, Ging said, Mali was suffering from the severe food crisis that has hit Africa's arid Sahel region.
He said more than 430,000 Malians have been displaced.
The groups conquered much of northern Mali after a military coup in Bamako, aided by al-Qaeda's North Africa wing.
In Timbuktu, they imposed strict Islamic law and forced thousands to flee; others were tortured and executed.
But the French-led intervention in January brought the fighters to quit the northern cities of Timbuktu, Gao and
Kidal and retreat to mountainous hideouts near the Algeria border.
PHOTO CAPTION
French soldiers patrol in a Gao's street on February 27, 2013.
Aljazeera