הָאַ֥יִל אֲשֶׁר־רָאִ֖יתָ בַּ֣עַל הַקְּרָנָ֑יִם מַלְכֵ֖י מָדַ֥י וּפָרָֽס׃
The ram which thou sawest having the two horns, they are the kings of Media and Persia.
Read kabbalistic (mystical) interpretation of Daniel 8:20: and classical mystical sources.