Which territories did Finland cede to the Soviet Union during the 1940s?

During the 1940s, Finland ceded several territories to the Soviet Union as a result of the Russo-Finnish War and the subsequent War of Continuation.

• Treaty of Moscow (1940): Following the Winter War, Finland surrendered a large area of southeastern Finland, including the Karelian Isthmus and the city of Viipuri (Vyborg), and leased the Hanko Peninsula to the Soviet Union for 30 years.12
• Armistice and Paris Peace Treaty (1944–1947): Under the terms of the 1944 armistice and the 1947 peace treaty, Finland ceded the province of Petsamo (Pechenga) to the Soviet Union. Additionally, Finland was required to lease the Porkkala area, located southwest of Helsinki, to the Soviet Union for a period of 50 years.34

These territorial adjustments, along with the requirement to pay significant war reparations, were part of the broader geopolitical shifts that concluded the conflicts between Finland and the Soviet Union during World War II.34