DUBAI, United Arab Emirates (AP) - The Arab satellite station Al-Jazeera on Thursday reported it had received a statement and videotape from an Iraqi resistance group that claimed responsibility for attacks on American forces and threatened more. It was believed to be the first such claim, and the first time a group said it had organized the increasingly bloody offensive. The Pentagon repeatedly has said the attacks - that have killed at least 18 American lives since May 1 when President Bush declared the major fighting over - were not the work of any organized resistance. Six British soldiers were...