And the rough goat is the king of Grecia
Including all the kings of it, from Alexander to the end of the
Grecian monarchy; or rather the kingdom of Greece, which began in
him, and continued until it was destroyed by the Romans: this was
signified by the rough or hairy goat, especially when Alexander
was at the head of it, for his strength and prowess, his
swiftness in his marches over rocks and mountains, his majesty
and grandeur, and also his lust and uncleanness; (See Gill on
Daniel
8:5): and the great host that is between his eyes
is the first king;
this is Alexander, who, though he was not the first king of
Macedon, his father Philip, and others, were kings before him;
yet was the first king of the Grecian monarchy, which took place
on the Persian monarchy being destroyed by him.