字幕表 動画を再生する 英語字幕をプリント 30 years ago, we were all protected by something called mutually assured destruction. Life was very different. Then we have to go through all this. Yes, you must. The letters were able to pass through the Berlin Wall. From there they would be sent by diplomatic mail bag to London. This was treason. Then this happened 1989 1 of the great days of modern human persistence. The wall may be gone, but is there still a chill in the air? In those days, the rules were the rules now drawn Cold War season on BBC four.