A Sudanese boy stands behind a watermelon stall near the spot where a US air worker and his driver were killed in a pre-dawn shooting attack in Khartoum in January 2008. The US embassy in Khartoum has warned that an Al-Qaeda group had threatened Americans in Sudan and the US government, following the double murder of two staff on New Year's Day.
(AFP/File/Isam al-Haj)