POSHEDIN, O. The European Union’s Response to Russian Aggression against Ukraine (2014–2021). Problems of World History, [S. l.], n. 32, p. 127–139, 2025. DOI: 10.46869/2707-6776-2025-32-6. Disponível em: https://journal.ivinas.gov.ua/pwh/article/view/379. Acesso em: 4 jun. 2026.