Separately , still another official confirms to CNN that the core al Qaeda group in Pakistan is also seeking to place operatives in places to attack U.S. targets overseas and domestically . A `` threat stream '' from al Qaeda groups has evolved during February . The threats target Europe as well as the United States . Official to al Qaeda : So far , `` we do not see operational cells of al Qaeda inside Yemen CNN in Europe , based in Yemen , is of particular concern .
A `` threat stream '' from al Qaeda groups has evolved during February . The threats target Europe as well as the United States . Official to al Qaeda : So far , `` we do not see operational cells of al Qaeda inside Yemen CNN in Europe , based in Yemen , is of particular concern .