I was reading some publications at wol.jw.org about the Jehovah's Witnesses beliefs pertaining to the end of the world, such as this article from which I quote below snippet:
5 What yet unseen event will take place next? Paul stated: “Whenever it is that they are saying: ‘Peace and security!’ then sudden destruction is to be instantly upon them.” The first phase of this “sudden destruction” is the attack against “Babylon the Great,” the world empire of false religion, also known as “the harlot.” (Rev. 17:5, 6, 15) That attack against all forms of false religion, including Christendom, is the start of the “great tribulation.” (Matt. 24:21; 2 Thess. 2:8) For many, this event will come as a surprise. Why? Because up to that point, the harlot will confidently view herself as “a queen” who will “never see mourning.” But she will suddenly discover that she has miscalculated her chances of survival. She will be wiped out rather quickly, as if “in one day.”—Rev. 18:7, 8.
6 God’s Word identifies the harlot’s attacker as a “wild beast” with “ten horns.” A study of the book of Revelation shows that the wild beast refers to the United Nations (UN). “The ten horns” represent all present political powers that support this “scarlet-colored wild beast.”* (Rev. 17:3, 5, 11, 12) How devastating will the attack be? The nations of the UN will plunder the harlot’s wealth, expose her real character, devour her, and “completely burn her.” Her destruction will be final.
What I wanted to know is, is this some modern idea among Jehovah's Witnesses that United Nations will attack religion? Or since when have they believed that this is what those events in the book of Revelation refer to?