The Heart Flag of Serbia and Montenegro is a historical flag that symbolizes the unity between these two Balkan nations. Originally used during the Federal Republic of Yugoslavia (1992-2003), it is characterized by a red field with a large white heart in the center, the heart being divided diagonally by the Adriatic-Ionian line, symbolizing the geographical division between Serbia and Montenegro. The flag gained popularity during peaceful student protests, as it represented the shared identity of the two nations while acknowledging their distinct cultural and geographical differences. Despite no longer being the official flag, it continues to be used in various contexts, particularly in expressions of national pride or solidarity among Serbs and Montenegrins.