BAMAKO, Mali – The battle to retake Mali's north from the al-Qaida-linked groups controlling it began in earnest Saturday, after hundreds of French forces deployed to the country and began aerial bombardments to drive back the Islamic extremists.

At the same time, nations in West Africa authorized the immediate deployment of troops to Mali, fast-forwarding a military intervention that was not due to start until September.

The decision to begin the military operation was taken after the fighters, who seized the northern half of Mali nine months ago, decided earlier this week to push even further south to the town of Konna, coming within 30 miles of Mopti, the first town held by the government and a major base for the Malian military.