The UN special representative for Somalia on Tuesday called for a redoubling of efforts in battling the country\'s Al-Qaeda-linked Shebab fighters, behind the deadly mall siege in neighbouring Kenya. The \"UN approach and my approach to Shebab in Somalia is we need to intensify our campaigns,\" Nicholas Kay told reporters in Geneva. \"It must be military, but also political and practical... On all three, we need to redouble our efforts.\"