In recent months, Abu Mansoor has released tapes that included American rap lyrics in the background. According to Ben Venzke, president of IntelCenter, a Washington-based firm that tracks and analyzes al Qaeda propaganda videos, Mansoor and al Shabaab have released a \"steady, yet rapid, escalation in the overall video production quality of their material.\"

U.S. government officials have been concerned about the growing attraction for American citizens of Somali decent heading to Somalia to join that country's continuing civil war and insurgency. Last year, FBI officials acknowledged that as many as 20 Somali-American teenagers disappeared from their Minneapolis community, headed to fight with the al-Qaeda-linked group al Shabaab.

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