Perm Krai

It's been a momentous week.

As we film this episode, details are emerging of a double drone strike on two chemical plants in the city of Berezники in Perm Krai.

That is 1,000 miles inside Russian territory.

These are plants that Ukraine says both make ingredients that support Russia's military industrial complex: nitrogen and ammonia, things used for fertilizer, also used for explosives.

Winter 1983, a Soviet geologist named Emil Bashurin is walking through a forest in the Perm region in Russia's Ural Mountains, and he stops.

There, cut into the snow, is a perfect circle about 62 meters across.

A sharp, worn path runs around its edge.

Russia-Ukraine War Ukrainian strikes overnight killed two people and struck an oil refinery and a passenger train, according to Russian officials.

Perm Region Governor Dmitry Makonin said one man had been killed during a massive drone strike, while Belgorod local officials reported one civilian was killed and another wounded when a drone struck a truck.

Anton Kolodiachny reports for Reuters.

Russia's Novosakhtinsk oil refinery today temporarily suspended operations after overnight Ukrainian drone attacks, according to Rostov region governor Yuri Slisar.