Shadow Curtain

A supernatural phenomenon enacted by the Methuselah Baba Yaga, the Shadow Curtain is akin to the Soviet Union's Iron Curtain in the mid 1900's. In essence, it blockaded the Umbra of Northern Europe from supernatural influence, preventing arcane modes of communication, spying, or passage in and out of the region. This allowed Baba Yaga to dominate the local kindred population, while culling those who would otherwise have been a threat thanks to outside reinforcements. It also meant that outsiders could not spy on Russia via occult means, nor Russia on them. It was only after the death of the Little Grandmother that the curtain was finally lifted, after being murdered by the Nictuku Vasilisa.