Reactions to the assassination of former Pakistani leader Benazir Bhutto.

"The United States strongly condemns this cowardly act by murderous extremists who are trying to undermine Pakistan's democracy. Those who committed this crime must be brought to justice."President Bush

"The brutal assassination of former Pakistani Prime Minister Benazir Bhutto is a tragic setback for the restoration of democracy in Pakistan. Her courageous return to Pakistan this year gave hope to all those concerned by efforts to extinguish rule of law there."House Speaker Nancy Pelosi, D-Calif.

"Her death is a tragedy for her country and a terrible reminder of the work that remains to bring peace, stability and hope to regions of the globe too often paralyzed by fear, hatred and violence."Sen. Hillary Clinton, D-N.Y.

"Her death is a reminder that terrorism anywhere — whether in New York, London, Tel Aviv or Rawalpindi — is an enemy of freedom. We must redouble our efforts to win the terrorists' war on us."Former New York City Mayor< Rudy Giuliani, a Republican

"I am shocked and saddened by the death of Benazir Bhutto in this terrorist atrocity. She was a respected and resilient advocate for the democratic aspirations of the Pakistani people. We join with them in mourning her loss, and stand with them in their quest for democracy and against the terrorists who threaten the common security of the world."Sen. Barack Obama, D-Ill.

"This points out again the extraordinary reality of global, violent, radical jihadism. We don't know who is responsible for this attack, but there's no question but that the violence we see throughout the world is violence which is not limited to Iran, Iraq and Afghanistan, but is more global in nature." — Former Gov. Mitt Romney, R-Mass.

"At this critical moment, America must convey both strength and principle. We should do everything in our power to help bring the perpetrators of this heinous act to justice and to ensure that Bhutto's movement toward democracy continues." — Former Sen. John Edwards, D-N.C.

"On this sad day, we are reminded that while our democracy has flaws, it stands as a shining beacon of hope for nations and people around the world who seek peace and opportunity through self-government." — Former Gov. Mike Huckabee, R-Ark.