“The Chadian army does not have the skills to fight a shadowy, guerrilla-style war that is taking place in northern Mali,” he said. Three Chadian soldiers were killed in a suicide attack in Mali on Friday. Soldiers from Chad, France and other African countries have ousted Islamist militants from northern Mali’s towns. But fighting continues in some remote parts of the Sahara Desert. Chad’s 2,000 troops were seen as playing a crucial role in the fighting because of their experience in desert warfare. . .