Siim Kallas, a pivotal figure in Estonia’s transition from Soviet rule and its establishment as a modern European nation, has died at the age of 77. He served as Estonia’s prime minister and later as a European Commission vice-president, playing a crucial role in introducing the country’s own currency and establishing a market-based economy. The news of his death was announced by his daughter, Kaja Kallas, who currently serves as the European Union’s foreign policy chief and was herself a former Estonian prime minister. Kallas is remembered for his leadership during a period of significant change and for laying the groundwork for Estonia's economic success. His work was instrumental in transforming Estonia into a liberal, market-oriented state. He passed away in the early hours of August 22nd, leaving behind a legacy of economic and political reform. His contributions will be deeply felt by Estonia and the European Union.