Finlandization is the process by which one powerful country makes a smaller neighboring country refrain from opposing the former's foreign policy rules, while allowing it to keep its nominal independence and its own political system. The term means "to become like Finland", referring to the influence of the Soviet Union on Finland's policies during the Cold War.

Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, opposite Estonia. Finland covers an area of 338,145 square kilometres (130,559 sq mi) and has a population of 5.6 million. Helsinki is the capital and largest city. The vast majority of the population are ethnic Finns. Finnish and Swedish are the official languages, with Swedish being the native language of 5.1% of the population. Finland's climate varies from humid continental in the south to boreal in the north. The land cover is predominantly boreal forest biome, with more than 180,000 recorded lakes.