> 300 km/h trains connecting Finnland with Spain with no delay or bumps?
Bit tricky this: either you cross the Baltic by ferry and resume at Tallinn, or you have to go a long way round north from Helsinki and come down again through Sweden, across Oresund and through Denmark.
Yeah, I meant the northern way, but a tunnel into the baltics, or a normal, peaceful landconnection over St.Petersburg would of course make more sense for connecting Helsinki. Or connecting Helsinki with Stockholm via Åland.
That bridge is going to be incredibly easy to destroy, should a big enough country wish that. And it definitely isn't going to be rebuilt quickly enough to matter for a war.
