Clear definition of "terrorism" needed.

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"If Afghanistan is the battlefield for Al Qaeda, Yemen has remained the most consistent source of its foot soldiers," indicates Mbaye Lo, assistant professor of Arabic Studies at Duke University, Durham, N.C., and author of Understanding the Muslim Discourse: Language, Tradition and Bin Laden's Message. "Yemen is the homeland of the ancestral family of the founder of Al Qaeda, Osama bin Laden himself," explains Lo. "So, that is why it is no surprise that most Guantanamo detainees are from Yemen."

Lo maintains the U.S. and Yemeni governments, as well as other nations, need to agree on a clear-cut definition of terrorism to succeed in battling AI Qaeda. For instance, he points out that Yemen's Abdul Majid al-Zindani was a spiritual leader to Bin Laden. "He is...