Combination picture of Muammar Gaddafi's sons Saadi (L) and Saif al-Islam. Saif al-Islam, promised on August 31, 2011 continued resistance to Libyan forces which ousted his father from Tripoli, and urged Libyans to wage a war of attrition against the National Transitional Council and its NATO backers, while Saadi, told al-Arabiya TV he had contacted the NTC commander in Tripoli with authorisation from his father as part of efforts to stop the bloodshed in Libya. REUTERS/Staff/Files (LIBYA - Tags: POLITICS CONFLICT TPX IMAGES OF THE DAY)