UNITED NATIONS — A scandal about the sexual abuse of Congolese women and children by U.N. officials and peacekeepers intensified Friday with the broadcast of explicit pictures of a French U.N. worker and Congolese girls and his claim that there was a network of pedophiles at the U.N. mission in Congo. ABC News' "20/20" program showed pictures taken from the computer of a French U.N. transport worker. The hard drive reportedly contained thousands of photos of him with hundreds of girls. In one frame, a tear can be seen rolling down the cheek of a victim. The news report coincided...