Original:  Joo Silva and Kevin Carter in Sudan Invitation by UN Operation Lifeline Sudan In March 1993, Robert Hadley, a former photographer and at this time the information officer for the UN Operation Lifeline Sudan, offered Joo Silva and Kevin Carter to come to Sudan and report about the famine in southern Sudan. It was an offer to go into southern Sudan with the rebels.
Revised:  Joo Silva and Kevin Carter in Sudan Invitation by UN Operation Lifeline Sudan In March 1993, Robert Hadley, a former photographer and at this time the information officer for the UN Operation Lifeline Sudan, offered Joo Silva and Kevin Carter to come to Sudan and report about the famine in the south of the country, travelling into southern Sudan with the rebels.
Edit intent: clarity