Sundays capture of Seif al-Islam Gadhafi by rebels appears to bring to a close the diplomatic career of a man widely seen as destined to succeed his father as leader of Libya and its vast oil wealth.
Mr. Gadhafi, 39 years old, just months ago was widely credited as the brains behind Tripolis rapprochement with the West and Libyas efforts to shed its rogue-state image.
Mr. Gadhafi never held a formal government position and often was locked in intense power struggles with other members of Col. Moammar Gadhafis family and inner circle, according to U.S. and European officials. But Seif al-Islam used his fluent English, British education and global charity, the Gadhafi International Foundation, to play a major role in events cross the Islamic world, Europe and U.S. for two decades.
He also developed a reputation as a renaissance man and international playboy before political crisis gripped his country this year. He worked as an artist and architect and was regularly spotted among the international jet set in Monaco, St, Tropez and Montenegro.
Mr. Gadhafi first attracted international attention in the mid-1990s when he helped the Philippines Catholic-dominant government reach a peace agreement with Muslim separatists on the island of Mindanao. The pact eventually broke down, but Seif al-Islam used the experience to position himself as a diplomatic facilitator and bridge between Islam and the West. (...)