Scholarly discussion of the synchronic and diachronic formation of the Book of Isaiah and the Book of the Twelve Prophets has begun to recognize the intertextual relationships between these two major prophetic books. Indeed, the Book of the Twelve Prophets appears to be formulated in part as a response to the Book of Isaiah. This paper examines that interrelationship by focusing on the role of Zion as the place where swords are turned into plowshares in Isaiah 2:2-4; Micah 4:1-5; Joel 4:9-13; and Zechariah 8:20-23 in relation to the expectations of future judgment and restoration in their respective books. Examination of these passages will demonstrate a major debate between Isaiah and the Twelve on the issue of the future of Zion, world peace, and the political constitution of Israel/Judah. The Book of Isaiah envisions a process whereby the ideals of the “swords into plowshares” passage will be realized when both the nations and Israel suffer judgment on “the Day of YHWH.” The Book of Isaiah envisions the passing of Davidic kingship as Israel at large is granted the eternal covenant, King Cyrus of Persia is selected as G-d’s messiah and Temple builder, and ultimately YHWH is recognized as the true king at the end of the book. The Book of the Twelve envisions a process whereby the ideals of the “swords into plowshares” passage are realized when a new Davidic king rises to defeat the nations that threaten Zion who then ultimately recognize YHWH by the end of the book.