Ok. In 1979, the Russians invaded Afganistan for what seems like no fucking reason. It dragged on for 10 years. They sent 50,000 men to their deaths. Why? I've looked in history books. I've looked in encyclopedias. I've asked my history professor. I can't find an answer. It seems like there was no motive for that war whatsoever. You're my last hope.
Why the hell did the Soviet Union invade Afganistan?