is it true?

Mark 15:2

"And Pilate asked him, Art thou the King of the Jews?"

in Greek, this verse is translated:

"Καὶ ἐπηρώτησεν αὐτὸν ὁ Πιλᾶτος Σὺ εἶ ὁ Βασιλεὺς τῶν Ἰουδαίων?

The word Ἰουδαίων comes from the root word:

Ioudaiōn

J. D. Cohen states the word must be translated as "Judean"

>https://en.wikipedia.org/wiki/Ioudaios