Complex sentence: Only in Libya did he support the call for a no-drive zone when the forces of Kaddafi had regained lost ground and threatened a massacre in the city of Benghazi, but he criticised the Libyan opposition for taking up arms in the first place.
Split into simpler sentences: Only in Libya did he support the call for a no-drive zone when the forces of Kaddafi had regained lost ground and threatened a massacre in the city of Benghazi. But he criticised the Libyan opposition for taking up arms in the first place.