Explanation: Stalin firmly believed, according to this speech, that foreign nations attacked Russia because it was weak. Therefore, any foreign policy that would provide a buffer and strength to Russia proper was in Russian interests. You can eliminate (A) because the Soviets invaded Afghanistan to prop up a socialist government. Eliminate (C) because the protesters that the Soviets crushed were trying to gain independence for their countries. Eliminate (D) because the Soviets attacked Japan to gain territory and have a say in the post-war Far East.