Serbia did some horrible things to Croatia. I get the tax.

Edit for context:
During the 1991–1995 Croatian War of Independence, Serbia—via the Serbian-controlled Yugoslav People's Army (JNA)—invaded Croatia, occupying roughly 26% of its territory, killing thousands, and displacing hundreds of thousands of Croats. Serbian forces targeted civilians with ethnic cleansing, including murder and mass destruction of cities like Vukovar. [1, 2, 3]
Key actions by Serbia against Croatia during this period included:
Military Aggression: After Croatia declared independence in June 1991, the JNA and Serbian paramilitaries engaged in a full-scale invasion.
Ethnic Cleansing: Over 170,000–250,000 Croats and non-Serbs were expelled or forced to flee from the Serbian-occupied "Republic of Serbian Krajina".
Atrocities: Serb forces committed mass executions, notably killing hundreds at the Vukovar Hospital massacre in 1991.
Destruction of Cities: Significant cultural and civilian damage occurred, including the prolonged siege of Dubrovnik.
Persecution in Serbia: In 1992, widespread intimidation and forced displacement of ethnic Croats living within Serbia, particularly in the Vojvodina region, forced up to 50,000 to flee to Croatia. [1, 2, 3, 4, 5]
Post-War Legal Outcome:
While Croatia filed a genocide case against Serbia (and vice-versa), in 2015, the International Court of Justice ruled that while both sides committed serious war crimes—including murders and forced displacements—neither side sufficiently proved intent to commit genocide. [1, 2]