[gbear605]

The far side of Finland? That’s the Baltic Sea. Sure, there’s a little bit of Sweden, but it’s so far north that there isn’t much rail infrastructure there - certainly little enough that it could quickly be destroyed at the beginning of a war.

[dmurray]

The stated reason for the gauge change is "to remove technical obstacles to transporting troops and goods between Finland, Sweden and Norway".

Those few connections in the sparse north of the country are the entire point.

[_w1tm]

If the supply line is blown up at the beginning of the war then what was the point of switching gauges.