Daniel 7 gives us some information about the identity of the end time governments. In Daniel 7, we see that the major players will be Russia (the bear), United States (the eagle), Great Britain (the lion), France (the fowl) and Germany (the leopard). In Revelation 13, we see these beasts again, but this time, we do not see the wings of the eagle. Instead, we see the eagle's wings in Revelation 12:14 protecting the woman (Israel). From this prophecy in Revelation 13 it appears as though the United States will either withdraw from the United Nations, or it will be an uncooperative member.
1 And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy. 2 And the beast which I saw was like unto a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of a lion: and the dragon gave him his power, and his seat, and great authority.