BBC News with Jerry Smit. Militants belonging to the Islamist group al-Shabab have carried out the most serious assault in the Somali capital Mogadishu since they were forced out the city in August 2011. _________________Elsewhere in the city, there was a suicide bomb attack on a Turkish aid agency convoy, in which five people were killed. Correspondents say the attacks demonstrate that al-Shabab, though territorially weaker, can still mount well-planned and audacious assaults. The BBC's Mohammed Moalimuu in Mogadishu says the city feels less secure. 杰瑞`斯密特为您带来BBC新闻.隶属于伊斯兰组织阿尔-沙巴布的激进分子在索马里首都摩加迪沙发动了自其2011年8月份被驱逐出该城后最猛烈的一次攻击.___________________在该市的其它地方,土耳其援助机构车队遭到自杀式炸弹袭击,造成五人丧生.记者们称,袭击事件证明虽然阿尔-沙巴布占据的地盘不多,但依然能精心策划发动猛烈袭击.BBC驻摩加迪沙记者穆罕默德`毛里姆称,这座城市让人感到越来越不安全.