This nation's Continuation War involved an alliance with Germany partially to respond to a neighbor's use of the Aland Islands and ended during Gustaf Mannerheim's presidency. It helped the Nazis because it allowed for submarine training in the Baltic and cut off the Murmansk railroad. This followed a 4 month war with fighting was over control of the (*) Petsamo mines, Lake Ladoga, and the the Karelian Isthmus, called the Winter War. They were a 
This nation's Continuation War involved an alliance with Germany partially to respond to a neighbor's use of the Aland Islands and ended during Gustaf Mannerheim's presidency. It helped the Nazis because it allowed for submarine training in the Baltic and cut off the Murmansk railroad. This followed a 4 month war with fighting was over control of the (*) Petsamo mines, Lake Ladoga, and the the Karelian Isthmus, called the Winter War. They were a grand duchy controlled by Russia until 1917, and which was taken from Sweden. Inhabited by the Suomi, this is FTP what Baltic nation with capital Helsinki? 
This nation's Continuation War involved an alliance with Germany partially to respond to a neighbor's use of the Aland Islands and ended during Gustaf Mannerheim's presidency.
{Finland} (accept {Suomi} until it is mentioned)