Description:French forces fly over central northern Mali as they intensify their ongoing mission in the West African nation. France is deploying ground troops and war planes in an effort to halt an Islamist advance. Analysts say France and its African allies must deploy ground forces quickly to capitalize on 10-days of hard-hitting air strikes to prevent insurgents from regrouping in the desert. On Sunday Tuareg separatists in Niger pledged to join the fight.(1:20)