リヒャルト・ゾルゲ
Richard Sorge was a Soviet citizen (i.e., country A), who posed as a German (country C) journalist in Tokyo, to report on Japan (country B) back to the Soviet Union. Sorge was eventually caught and executed by the Japanese, who generally honored his bravery. Especially in wartime, while a country may need to execute an agent, they sometimes respect them.