In Walter Isaacson's book "Einstein: His Life and Universe," the author highlights Einstein's belief in the necessity of a world government for the future of civilization and humanity. Einstein contended that without a unified global authority, the existence of sovereign states with their military arsenals would inevitably lead to further global conflicts and wars.
Einstein's assertion emphasizes the risks associated with national sovereignty when combined with military capabilities, suggesting that true peace can only be achieved by dismantling these armament secrets and creating an overarching governing body that transcends national interests. This perspective reflects Einstein's deep concern for the future of humanity amidst the threat of warfare.