Terrorists strike again: a truck bomb crashes into the lobby of the U.N. headquarters in Baghdad (search), killing at least 10 and wounding scored of others -- mostly Iraqis.

"The explosion was caused by a massive truck bomb," Bernard Kerik, the senior U.S. law enforcement official in Baghdad and former New York City police commissioner, told reporters at the scene. "We have evidence to suggest it could have been a suicide attack."

And will such attacks weaken the resolve of the international community? For answers, we’ll turn to retired U.S. Army Lt. Col. Robert Maginnis, FOX News military analyst; Amb. Dennis Ross, former special Middle East coordinator and FOX News foreign affairs analyst, and Denis Halliday, former U.N. assistant secretary general.

Why would terrorists attack aid workers and their fellow Arabs? Hussein Ibish, media director of the American-Arab Anti-Discrimination Committee, weighs in.

Could a similar attack happen here in the United States? We’ll ask Maurice Sonnenberg, former vice chairman of the National Commission on Terrorism, and David Rice, senior analyst for the World Markets Research Center.

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