Militant group al-Shabab claimed responsibility for an apparent suicide attack on a United Nations bus in northern Somalia that killed at least seven people. The attacker Monday targeted a minibus carrying staffers of the U.N. Children\'s Fund as they traveled from their guest houses to their office. ________________________________ The bombing was al-Shabab\'s third deadly attack against international personnel in the last three days. 武装组织青年党宣称对索马里北部发生的联合国车辆自杀式袭击事件负责,事故造成至少7人死亡.周一,袭击者的目标是一辆载着联合国儿童基金会职员的小型汽车,他们正从接待区返回办公室.__________________________________________________此次事故已经是三天以来青年党对国际人员的第三次致命袭击.