1650s in Finland

Kajaani (; ), is a town in Finland and the regional capital of Kainuu. Kajaani is located southeast of Lake Oulu, which drains into the Gulf of Bothnia through the Oulu River. The population of Kajaani is approximately , while the sub-region has a population of approximately . It is the most populous municipality in Finland.

Hamina (; , , Sweden ) is a town and a municipality of Finland. It is located approximately east of the country's capital Helsinki, in the Kymenlaakso region, and formerly the province of Southern Finland. The municipality's population is (as of ) and covers an area of , of which is water. The population density is . The population of the central town is approximately 10,000. The municipal language of Hamina is Finnish.

conflict