He said an interagency team of U.S. experts has been sent to Yemen to join in an investigation of the attack, and that it is premature to discuss a possible new security steps.

• 他说，由几个美国政府机构组成的专家小组已经前往也门，参加对袭击的调查，现在就讨论今后可能采取什么新的安全措施还为时尚早。