Midrash su Isaia 25:6

[(Psalms 75:9) "For the (poisoned) cup is in the hand of the L-rd — strong wine, fully admixed (for all of the nations). And from this He poured. Only (the wicked) will drain its dregs. All the wicked of the earth will drink (of it.)"] (Devarim 32:34) "Is it (this cup of retribution) not laid up with Me?" R. Yossi Haglili says: A cup that was "laid up" and lacking (its full strength) — I might think it "weakened" (in potency); it is, therefore, written "strong wine." I might think that only half of it remains; it is, therefore, written "fully admixed." I might think that it never lacked even one drop; it is, therefore, written "and from this He poured from this." From that drop there drank: the men of the generation of the flood, the men of the generation of the tower of Bavel, the men of Sodom and Amorah, Pharaoh and all his army, Sisra and all his host, Nevuchadnezzar and all his army, Sancheriv and all his ranks. And from that drop there are destined to drink all the (wicked) comers to the world until the end of all the generations. And thus is it written (Isaiah 25:6) "And the L-rd of hosts will make — for all the peoples (who come to war) in this mountain (Mount Zion, who thought to have) a feast of oils (i.e., an easy victory) — a feast of lees. (He will convert an intended feast of) marrowed oils (into one of) drained dregs." (All this in the war of Gog and Magog). I might think (that they would drink) lees which serve some purpose; it is, therefore, written "drained dregs" — lees which are nothing but empty froth. And thus is it written (Jeremiah 51:7) "A golden cup was Bavel in the hand of the L-rd." And (Ezekiel 23:32) "The cup of your sister will you drink, the deep and the wide. You will be (the object of) laughter and scorn, too much to contain (i.e., to bear)." Just as with gold, after it breaks, it can be "healed," so, when punishment curses the nations, it is destined to return to them. But, with respect to Israel, what is written (Ibid. 34) "And you will drink it and drain it, and its shards will you crunch." Just as with earthenware, after it breaks, it cannot be healed, so, when punishment ceases from Israel, it is not destined to return to them.