Whoever the King of the North is, he has no choice in the matter. Iran will drag him into the conflict; God will make sure that happens.
'Ezekiel 38 Battle
Gog and Allies Attack Israel
Now the word of the Lord came to me, saying, “Son of man,[Ezekiel the Prophet]set your face against Gog[leader], of the land of Magog[Scythians], the prince of Rosh[in Turkey], Meshech,[also in Turkey]and Tubal[also in Turkey], and prophesy against him, and say, ‘Thus says the Lord God: “Behold, I am against you, O Gog, the prince of Rosh, Meshech, and Tubal. I will turn you around, put hooks into your jaws, and lead you out, with all your army, horses, and horsemen, all splendidly clothed, a great company with bucklers and shields, all of them handling swords.
Persia[Iran], Ethiopia, and Libya are with them, all of them with shield and helmet; Gomer[Southern Russia]and all its troops; the house of Togarmah[Armenia]from the far north and all its troops—many people are with you.
Biblical