Assigning blame to individuals, institutions, rebels and governments for the continued exploitation of the Democratic Republic of the Congo's natural resources, the U.N. panel of experts on the illegal exploitation of natural resources and other forms of wealth in the D.R.C. yesterday presented its findings to the U.N. Security Council...To attempt to stem the trade in diamonds, gold, copper, coltan, timber and other resources, the panel is calling for a moratorium on their purchase and import from the D.R.C.