Hammarskjold knew that failure to put national considerations aside in favor of the common good had been the primary failure of international peacekeeping efforts going all the way back to the Congress of Vienna in 1815.

哈马舍尔德知道，自1815年维也纳会议以来，国际维持和平努力的主要失败在于未能把国家利益放在一边，为共同利益努力。