This policy research paper explores post-war Security Sector Reform (SSR) in Ukraine through insights drawn from the cases of Finland, South Korea, and Taiwan.

While each country differs in historical and geopolitical context, their experiences offer relevant perspectives on balancing defense effectiveness with democratic accountability in times of heightened security threat.

The paper considers how Ukraine can apply lessons from these cases in managing civil–military relations, reforming its defense industry, and engaging with international partners. Finland highlights the value of national consensus, territorial defense, and broad-based political oversight.

South Korea provides insight into long-term alliance management, defense reform, and civilian control amid militarization risks.

Taiwan offers perspectives on strategic deterrence, transparent defense governance, and civil society engagement.

Ukraine’s efforts to maintain civilian oversight, modernize its defense sector, and build external partnerships are evaluated in light of these comparative examples. Particular attention is given to how internal and external balancing strategies can contribute to post-war resilience. This study offers a framework for interpreting Ukraine’s evolving security sector within a broader, comparative context.

Despite the ongoing war, Ukraine is striving to maintain strong civil-military oversight, reform its defense industry, attract foreign investment, and strengthen diplomatic efforts to build bilateral and multilateral military alliances.