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(FILES) This file photo taken on December 2, 1993 of Sudan's Islamic leader, Moslem cleric Hassan al-Turabi (L) and Sudanese President General Omar el-Bashir (R) in Khartoum at the opening of an Arab-Islamic conference. On May 16, 2010 Sudanese authorities arrested Islamist opposition leader Hassan al-Turabi at his home, a month after the country's first competitive elections in 24 years, his secretary said. AFP PHOTO / MANOOCHER DEGHATI (Photo credit should read MANOOCHER DEGHATI/AFP/Getty Images)

(FILES) This file photo taken on December 2, 1993 of Sudan's Islamic leader, Moslem cleric Hassan al-Turabi (L) and Sudanese President General Omar el-Bashir (R) in Khartoum at the opening of an Arab-Islamic conference. On May 16, 2010 Sudanese authorities arrested Islamist opposition leader Hassan al-Turabi at his home, a month after the country's first competitive elections in 24 years, his secretary said. AFP PHOTO / MANOOCHER DEGHATI (Photo credit should read MANOOCHER DEGHATI/AFP/Getty Images)