How Soviet naval expansion could drive a Baltic alliance

What ships might smaller Baltic and Scandinavian states buy in response to larger German and Soviet navies?

Their response could become collective: Poland, Finland, and Sweden might form a Baltic defense alignment supported by Swedish shipbuilding.

Poland and Finland had direct security reasons to respond to new Soviet warships, while Sweden possessed an indigenous naval industry capable of supporting regional construction. A Finnish-Swedish-Polish defense arrangement is therefore plausible. Such an alignment could reshape local procurement and the strategic setting of any German invasion of Poland.