LONDON (Reuters) - Interpol said on Wednesday it was launching a special task force to tackle a growing problem of pedophiles using fake "modeling" sites on the Internet to gain access to children. The sites do not contain sexually graphic images, but serve as a front, enabling pedophiles to contact the site owners and gain physical access to the so-called child models, or to buy images of the children being abused. "This trend requires the urgent attention of law enforcement, but the significant investigative resources required are simply not available in most national police forces, which is why Interpol is...