Wang Kon's army fights ceaselessly with Later Baekje for the next decade, with Silla in retreat.

After a crushing victory over Baekje forces at present-day Andong in 930, Goryeo receives a formal surrender from Silla and proceeds to conquer Later Baekje by 935—amazingly, with troops led by the former Baekje king, Kyonhwon, whose son had treacherously cast him aside.

After this accomplishment, Wang Kon becomes a magnanimous unifier.

Regarding himself as the proper successor to Goguryeo, he embraces survivors of the Goguryeo lineage who are fleeing the dying Balhae state, which had been conquered by Khitan warriors in 926.

He now takes a Silla princess as his wife and treats the Silla aristocracy with unexampled generosity.

Wang Kon establishes a regime embodying the last remnants of the Three Kingdoms and accomplishes a true unification of the peninsula.