Rashi on Numbers 24:19/רש"י על במדבר כ״ד:י״ט

1וירד מיעקב AND OUT OF JACOB ONE SHALL RULE — and there will be yet another ruler from Jacob,

2והאביד שריד מעיר AND HE WILL DESTROY THE REMNANT OF THE CITY — the most important city of Edom, and that is Rome. It is of King Messiah that he is thus speaking, of whom it is said, (Psalms 72:8) “And he shall have dominion (וירד) from sea to sea”; (Obadiah v. 18) “And there shall be no remnant (שריד) of the house of Esau".