You could also say that Jeremiah 48 is a prophecy against Babylon (spiritual Babylon) or the Godless world system. Babylon is a spiritual city and Zion is a spiritual city. Those who are in bondage to Satan dwell in Babylon; those who abide in Christ dwell in Zion (the Presence of God).
I still believe that the United States is the most blessed nation on earth, but there is a lot of sin in this nation. People are still fighting for abortion rights and homosexual rights; we have too many people who live off of other people's taxes; the United States is 12 trillion dollars in debt; evolution is being taught as a science, when it is really a religion; people worship the creation more than the Creator (Romans Chapter 1).
So what is the Son of God (Jesus) supposed to do? Smile on the United States and say keep up the good work? No. The Lord is judging the United States (or aspects of the United States) for sin. The Lord is a God of love and a God of judgment. The Lord chastens those whom He loves: "He who spares the rod [of correction] hates his child."
Jeremiah 48: 1: "Against Moab thus saith the Lord of hosts, the God of Israel; Woe unto Nebo! for it is spoiled: Kiriathaim is confounded and taken: Misgab is confounded and dismayed."
Jeremiah 48: 4: "Moab is destroyed; her little ones have caused a cry to be heard."
Jeremiah 48: 11-12: "Moab hath been at ease from his youth, and he hath settled on his lees, and hath not been emptied from vessel to vessel, neither hath he gone into captivity: therefore his taste remained in him, and his scent is not changed. Therefore, behold, the days come, saith the Lord, that I will send unto him wanderers, that shall cause him to wander, and shall empty his vessels, and break their bottles."
Jeremiah 48: 14-16: "How say ye, We are mighty and strong men for the war? Moab is spoiled, and gone up out of her cities, and his chosen young men are gone down to the slaughter, saith the King, whose name is the Lord of hosts. The calamity of Moab is near to come, and his affliction hasteth fast."
Jeremiah 48: 20: "Moab is confounded; for it is broken down: howl and cry; tell ye it in Arnon, that Moab is spoiled."
Jeremiah 48: 25-26: "The horn of Moab is cut off, and his arm is broken, saith the Lord. Make ye him drunken: for he magnified himself against the Lord: Moab also shall wallow in his vomit, and he also shall be in derision."
Jeremiah 48: 29: "We have heard the pride of Moab, (he is exceeding proud) his loftiness, and his arrogancy, and his pride, and the haughtiness of his heart."
Jeremiah 48: 33: "And joy and gladness is taken from the plentiful field, and from the land of Moab; and I have caused wine to fail from the winepresses: none shall tread with shouting; their shouting shall be no shouting."
Jeremiah 48: 36: "Therefore mine heart shall sound for Moab like pipes, and mine heart shall sound like pipes for the men of Kirheres: because the riches that he hath gotten are perished."
Jeremiah 48: 38-39: "There shall be lamentation generally upon all the housetops of Moab, and in the streets thereof: for I have broken Moab like a vessel wherein is no pleasure, saith the Lord. They shall howl, saying, How is it broken down! how hath Moab turned the back with shame! so shall Moab be a derision and a dismaying to all them about him."
Jeremiah 48: 42-45: "And Moab shall be destroyed from being a people, because he hath magnified himself against the Lord. Fear, and the pit, and the snare, shall be upon thee, O inhabitant of Moab, saith the Lord. He that fleeth from the fear shall fall into the pit; and he that getteth up out of the pit shall be taken in the snare: for I will bring upon it, even upon Moab, the year of their visitation, saith the Lord. They that fled stood under the shadow of Heshbon because of the force: but a fire shall come forth out of Heshbon, and a flame from the midst of Sihon, and shall devour the corner of Moab, and the crown of the head of the tumultuous ones."