You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Russian_Soviet_Federative_Socialist_Republic

Context:
In 1943, Karachay Autonomous Oblast was dissolved by Joseph Stalin, when the Karachays were exiled to Central Asia for their alleged collaboration with the Germans and territory was incorporated into the Georgian SSR.

Question:
Who broke up the Karachays' oblast?

Joseph Stalin