Besma Khlifi, left, wife of Tunisian opposition leader Chokri Belaid, reacts after 

Besma Khlifi, left, wife of Tunisian opposition leader Chokri Belaid, reacts after he was shot to death in Tunis, Wednesday, Feb. 6, 2013.  A critic of the Islamist-led government and violence by radical Muslims, Belaid was shot to death outside his home Wednesday, in the first political assassination in post-revolutionary Tunisia. The killing is likely to heighten tensions in the North African nation whose path from dictatorship to democracy so far has been seen as a model for the Arab world. (AP Photo/Amine Landoulsi)
Associated Press
Besma Khlifi, left, wife of Tunisian opposition leader Chokri Belaid, reacts after he was shot to death in Tunis, Wednesday, Feb. 6, 2013. A critic of the Islamist-led government and violence by radical Muslims, Belaid was shot to death outside his home Wednesday, in the first political assassination in post-revolutionary Tunisia. The killing is likely to heighten tensions in the North African nation whose path from dictatorship to democracy so far has been seen as a model for the Arab world. (AP Photo/Amine Landoulsi)
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