The strong fortress of Viborg (Finnish: , Russian: ) guarded the eastern border of Finland. Sweden and Novgorod signed the Treaty of Nöteborg ( in Finnish) in 1323, but that did not last long. In 1348 the Swedish king Magnus Eriksson staged a failed crusade against Orthodox "heretics", managing only to alienate his supporters and ultimately lose his crown. The bones of contention between Sweden and Novgorod were the northern coastline of the Gulf of Bothnia and the wilderness regions of Savo in Eastern Finland. Novgorod considered these as hunting and fishing grounds of its Karelian subjects, and protested against the slow infiltration of Catholic settlers from the West. Occasional raids and clashes between Swedes and Novgorodians occurred during the late 14th and 15th centuries, but for most of the time an uneasy peace prevailed.
T,he strong fortress of Viborg (Finnish  Russian: ) guarded the easter:n border of Finland. Sweden and Novgorod signed the Treaty of Nöteborg ( in Finnish) in 1323, but that did not last long. In 1348 the Swedish king Magnus Eriksson staged a failed crusade against Orthodox "heretics" managing only to alienate his supporters and ultimately lose his crown. The bones of contention between Sweden and Novgorod were the northern coastline of the Gulf of Bothnia and the wilderness regions of Savo in Eastern Finland. Novgorod considered these as hunting and fishing gro,unds of its Karelian subjects, and protested against the slow infiltration of Catholic settlers from the West. Occasional raids and clashes between Swedes and Novgorodians occurred during the late 14th and 15th centuries, but for most of the time an uneasy peace prevailed.