In this bonus episode of Cold Front, we talk to the foreign correspondent at the Guardian Luke Harding. He will comment on some of the biggest revelations presented in this podcast series, and he will tell about his experiences with the Russian intelligence service FSB.

Out in the sea between Sweden and Denmark, Niels is chasing a Russian spy ship. And what he soon realises is, that the ship has been sailing close to several windfarms. Apparently mapping out critical infrastructure.