Circassian coast (Adyghe: Адыгэ хы аушу Adyge xy aušu; Russian: Черкесское побережье Čerkesskoe poberž′e or Черкесское причерноморье Čerkesskoe pričernomorje) was the coast of historical Circassia on the Black Sea before 1864, extending from Anapa in the North to Adler in the south, and including cities like Tuapse and Sochi. Provision of weapons and ammunition from abroad to the Circassians caused a diplomatic conflict between the Russian Empire and Great Britain in 1836 referred to as the Mission of Vixen.