Part I Special topic: 40 years of CISG: Ben Köhler, For an independent development of the CISG beyond Article 7 (2): a stocktake and a proposal.- Marko Jovanović, Forever Young – The Gap-Filling Mechanism of the CISG as a Factor of Its Modernization.- Jelena S. Perović Vujačić, Anticipatory Breach of Contract in Uniform Contract Law: Overview of the Solution of the UN Convention on the International Sale of Goods.- Nevena Jevremović, CISG & Proactive Contracting: Suspending Performance Under Art. 71 CISG In Time of a Global Pandemic.- Lok Kan So Poomintr Sooksripaisarnkit, COVID-19 in the context of the CISG – Re-considering the concept of hardship and force majeure.- Part II European law: Agne Limante, The Western Balkans on the way to the EU: revisiting EU conditionality.- Bojana Todorović, The Story of the Civil Supervisor: A Missed Opportunity to Strengthen Civil Control of Public Procurement in the Republic of Serbia.- P. Koukal, T. Kyselovská and Z. Vlachová, Employment Contracts and the Law Applicable to the Right to a Patent: Czech Considerations.- Part III International law: Apostolos Anthimos, Recognition and enforcement of foreign judgments in the field of Bilateral Conventions of Greece with Balkan States.- Barbara Herceg Pakšić, Holding All The Aces? Hate speech: Features and Suppression in Croatia.- Virdzhiniya Petrova Georgieva, The Challenges of the World Health Organization. Lessons from the Outbreak of COVID-19.- Nasir Muftic and Tahir Herenda, Sacrificing privacy in the fight against pandemics – how far is too far? Examples from Bosnia and Herzegovina and Montenegro.