John Prendergast, the co-founder of the Enough Project, told "60 Minutes" last year that minerals are the "root cause" of the fighting.
Gadget makers forced to look at links to Congo war →
"We must evolve from a whack-a-mole strategy against the FDLR," he said, referring to the Democratic Forces for the Liberation of Rwanda, one of Congo's violent militia groups. "There needs to be a more comprehensive counterinsurgency strategy."
In Congo, Clinton signals support →