What was Otto von Bismarck’s main foreign-policy goal after German unification?

After the unification of Germany in 1871, Otto von Bismarck’s primary foreign-policy goal was to maintain peace and ensure the security of the newly formed German Empire. Having achieved his objectives through three successful wars, he sought to establish Germany as a "satiated power" in the center of Europe, aiming to gain time so that the international community would accept the empire's existence as a natural development rather than a threat.12

To achieve this, Bismarck focused on two key diplomatic strategies:

• Isolating France: He aimed to prevent France from forming alliances with other major powers, particularly Austria-Hungary or Russia, which could create a hostile coalition against Germany.13
• Managing the Balkans: He worked to prevent conflict between Austria-Hungary and Russia over the disintegrating Ottoman Empire, as such a war could force Germany to choose sides and trigger a broader European conflagration.12

Bismarck employed complex, often elaborate diplomatic maneuvers—such as the Three Emperors’ League, the Dual Alliance, and the Reinsurance Treaty—to balance these competing interests and maintain stability until his resignation in 1890.123