An aerial view of the Yevgeny Primakov icebreaker on the ice-covered Neva River in St. Petersburg, Russia. Maersk, the world’s largest shipping line, is testing a Vladivostok to St. Petersburg route through the Arctic.

An aerial view of the Yevgeny Primakov icebreaker on the ice-covered Neva River in St. Petersburg, Russia. Maersk, the world’s largest shipping line, is testing a Vladivostok to St. Petersburg route through the Arctic