The use of the country name "Macedonia" was disputed between Greece and Macedonia (now North Macedonia) between 1991 and 2019. The dispute was a source of instability in the Western Balkans for 25 years. It was resolved through negotiations between Athens and Skopje, mediated by the United Nations, resulting in the Prespa agreement, which was signed on June 17, 2018. Pertinent to its background is an early 20th-century multifaceted dispute and armed conflict that formed part of the background to the Balkan Wars. The specific naming dispute, although an existing issue in Yugoslav–Greek relations since World War II, was reignited after the breakup of Yugoslavia and the newly gained independence of the former Socialist Republic of Macedonia in 1991. Since then, it was an ongoing issue in bilateral and international relations until it was settled with the Prespa agreement in June 2018, the subsequent ratification by the Macedonian and Greek parliaments in late 2018 and early 2019, and the official renaming of Macedonia to North Macedonia in February 2019.