 One such recent convert, who helped carry out the Kampala bombings but now cooperates with the Kenyan police, believes that the group is trying to use local Kenyans to do its "dirty work" for it, while its own core members escape unscathed.According to diplomats, Muslim areas in coastal Kenya and Tanzania, such as Mombasa and Zanzibar, are especially vulnerable for recruitment.Foreigners from Afghanistan and Iraq, as well as Afghan-trained Somalis, play an important role in the group's leadership ranks owing to their combat experience.