Al-Zarqawi was a key part of al-Qaida's marketing: He was a terror operator who stole headlines with jarring, gruesome attacks carried out by a network of foreign and Iraqi fighters. For more than three years, he evaded an international manhunt.
Counterterrorism officials have said al-Zarqawi served as a worldwide jihadist rallying point and a fundraising icon, the AP reports.
Although the United States and its major allies have made progress in shutting down some sources of terror financing, they face many challenges. Terrorist financiers have moved beyond using the traditional banking system to fund violence.