Malians look at a billboard on January 30 reading:'Homage to Damien... News Photo2012-2013 Northern Mali Conflict,Al-Qaida,Army,Awe,Billboard,Castle,City,Conflict,Desert,French Culture,Gao City,Gao Region,Horizontal,Islam,Mali,Military Attack,North,Rebellion,VitalityPhotographer Collection: AFP 2013 AFPMalians look at a billboard on January 30, 2013, reading:'Homage to Damien Boiteu (a French helicopter pilot killed on January 11) and to all those who died to free northern Mali -- Thank you (French President Francois) Hollande, Thank you France,' in the northern city of Gao, a key Islamist stronghold until it was retaken on January 26 by French and Malian troops in a major boost to the French-led offensive against the Al Qaeda-linked rebels, who have been holding Mali's vast desert north since last April. French troops on January 30 entered Kidal, the last Islamist bastion in Mali's north after a whirlwind Paris-led offensive, as France urged peace talks to douse ethnic tensions targeting Arabs and Tuaregs. AFP PHOTO/ SIA KAMBOU (Photo credit should read SIA KAMBOU/AFP/Getty Images)