Psalm 72:8 New English Translation

⁸May he rule^[a] from sea to sea,^[b]
and from the Euphrates River^[c] to the ends of the earth.

Psalm 72:8 tn The prefixed verbal form is a (shortened) jussive form, indicating this is a prayer of blessing.
Psalm 72:8 sn From sea to sea. This may mean from the Mediterranean Sea in the west to the Dead Sea in the east. See Amos 8:12. The language of this and the following line also appears in Zech 9:10.
Psalm 72:8 tn Heb “the river,” a reference to the Euphrates.

New English Translation (NET)