Hours before Mr Obama spoke in Prague, North Korea, the secretive Stalinist state, launched a long-range rocket apparently capable of being used as a missile.

• 奥巴马布拉格演讲前几个小时，朝鲜，斯大林主义的秘密信奉者，发射了一远程火箭，显然该火箭具备用于导弹的能力。