Christian responses to Israel's existence and legitimacy reveal deep theological confusion, particularly in the aftermath of the 1967 Six-Day War. Through analysis of personal correspondence, interfaith conferences, and official church statements, a complex picture emerges of Christian leaders struggling to reconcile their attitudes toward Judaism with their positions on Zionism. The Vatican maintained strategic neutrality toward Israel for two decades, while American Catholic leadership remained notably silent during the 1967 crisis. Jewish communities expressed profound disappointment - characterized as "dismal disillusionment" - regarding Christian inaction during periods of Arab aggression. Interfaith dialogues sponsored by the National Conference of Christians and Jews exposed fundamental misunderstandings, with participants "passing each other like ships in the night" regarding Israel's theological significance to Judaism. The research demonstrates that strengthening Jewish-Christian relations requires Jewish leaders to more clearly articulate the theological inseparability of Judaism and Zionism, while Christian communities must examine potential unconscious anti-Semitic biases influencing their stance on Israel.