Words from his widow

Pearl's death should be a global wake-up call about "a vast and international network of terrorists," his widow said.

"I know Danny has not been defeated" by those who killed him, Mariane Pearl told CNN weeks after her husband's death. "His spirit, his faith and his conviction have not been defeated."

She said governments across the world must take responsibility for fighting terror and citizens should take an active role in considering their countries' foreign policies.

"If people in the world do not realize that they're not immune against this anymore, then nothing will," she said.