The following, which might be relevant to current events, is borrowed from here.
St. Jerome was born around the year 340. He came to Rome and was baptized there around 360. He devoted the rest of his life to scholarly pursuits and the translation of the Bible into Latin. He died in 420. He wrote the following observations describing the devastation of the Empire around 406:
"Nations innumerable and most savage have invaded all Gaul. The Whole region between the Alps and the Pyrenees, the ocean and the Rhine, has been devastated by the Quadi, the Vandals, the Sarmati, the Alani, the Gepidae, the hostile Heruli, the Saxons, the Burgundians, the Alemanni, and the Pahnonians.
Oh wretched Empire! Mayence [Mainz, Germany], formerly so noble a city, has been taken and ruined, and in the church many thousands of men have been massacred. Worms [Germany] has been destroyed after a long siege. Rheims, that powerful city, Amiens, Arras, Speyer [Germany], Strasburg, - all have seen their citizens led away captive into Germany. Aquitaine and the provinces of Lyons and Narbonne, all save a few towns, have been depopulated; and these the sword threatens without, while hunger ravages within.
I cannot speak without tears of Toulouse, which the merits of the holy Bishop Exuperius have prevailed so far to save from destruction. Spain, even, is in daily terror lest it perish, remembering the invasion of the Cimbri; and whatsoever the other provinces have suffered once, they continue to suffer in their fear.
I will keep silence concerning the rest, lest I seem to despair of the mercy of God. For a long time, from the Black Sea to the Julian Alps, those things which are ours have not been ours; and for thirty years, since the Danube boundary was broken, war has been waged in the very midst of the Roman Empire. Our tears are dried by old age. Except a few old men, all were born in captivity and siege, and do not desire the liberty they never knew.
Who could believe this? How could the whole tale be worthily told? How Rome has fought within her own bosom not for glory, but for preservation - nay, how she has not even fought, but with gold and all her precious things has ransomed her life...
Who could believe that Rome, built upon the conquest of the whole world, would fall to the ground? That the mother herself would become the tomb of her peoples? That all the regions of the East, of Africa and Egypt, once ruled by the queenly city, would be filled with troops of slaves and handmaidens? That to-day holy Bethlehem should shelter men and women of noble birth, who once abounded in wealth and are now beggars?"
This eyewitness account appears in Robinson, James Harvey, Readings in European History (1906); Duruy, Victor, History of Rome and of the Roman People, vol VIII (1883).