and all of her treasured photographs. but months later, a miracle. there was a craigslist post from a stranger over 50 miles away who had found a photograph in their yard. it was a picture sucked up by the tornado. a baby photo of amber. the only one to survive. the woman mailed it back to amber along with $5, all she could afford, but wanted to give to help amber start her life over. for more information on what you can do in a tornado and what you can do to help combat the growing climate crisis, go to cnn.com/violentearth. i'm liev schreiber. thanks for watching. good night. [dramatic music playing] [raymond asquith] the listeners, as they were, the kgb, who had all the surveillance equipment, lived on the floor above us in moscow. and you knew they were there. on the whole, one just endured it. i mean, i remember my wife and i had some kind of argument about where we're gonna take the children for a weekend picnic. in a rather unmanly way, i sort of addressed the ceiling and said, "well, you up there, which did we agree?" and to my amazement, within about two or three hours, somebody had slipped in a note under our front door saying, "well, you had agreed on koskovo, or timiryazev..." or whatever it was. anyway, some picnic place. and i thought that was a kgb surveillant who had a good sense of humor, actually. [crowds cheering] [narrator] this is the unseen story of the cold war. fought not by politicians... but by secret agents. [jack barsky] there was complete misunderstanding on either side. it's very difficult to determine whom you can trust. [narrator] as the soviet union faces off with the west in the early 1980s... two spies play a dangerous game from the shadows. they seek to win the upper hand while the world stands on the brink of nuclear war. these are their stories in their own words. testimony pieced together from interviews over the years. [oleg gordievsky] after 11 years of secret work, maybe i develop paranoia. [narrator] ...and never-before- heard recordings... [aldrich ames, on recording] [narrator] ...that reveal the deadly intrigues at the heart of the battle between east and west. [alexander vassiliev] look, this is a war. a secret war. [dramatic music playing] [menacing music playing] [marina litvinenko] 1982 was a time when people in soviet union still believe reality of nuclear war. confrontation between west and east was very serious. sometimes, it was not only iron curtains, it was like an iron sphere. [narrator] this is a dangerous moment for the soviet union, almost 40 years into the cold war. their economy is overstretched, the military entrenched in afghanistan, and support for communism in decline. the soviet leadership, led by leonid brezhnev, stockpiles nuclear arms in a show of strength against the west. but there's a much subtler weapon too. secret intelligence. yuri andropov is the head of the soviet intelligence service, the kgb. the kgb have been running the russian life for years. andropov was getting more and more convinced of the menacing west. he was a full-blown kgb person who thought that it's either us or them. and basically, it better be them. [tim naftali] yuri andropov concludes that the superpowers are on the verge of a nuclear war. and so he begins a process of collecting information that would be indicators of the approach of nuclear war. [narrator] this running tally of signs is called operation ryan. and every time andropov gets new intelligence, he takes note. [nina] there is a chart for "americans said this," and "the brits said that." "somebody was caught here." and, "the plane crossed that border." and i think in andropov's mind, he was absolutely convinced nuclear confrontation is coming. [narrator] once his chart is full, andropov is convinced the soviet union should strike. and so he uses every resource to keep close watch on his adversaries. [marina] oleg gordievsky was a very high-qualificated intelligence officer. he was born in a family working for kgb. his brother working for kgb. [knock on door] i think he was a good example of soviet intelligence service. soviet union always keen to put agents all around the world. [door opens] [narrator] in 1982, the kgb sends gordievsky to the u.k., disguising his identity as a soviet diplomat. his posting comes at a tense time. relations between east and west are at a knife's edge. [tim] in december of 1979, the soviets had invaded afghanistan. soviet allies in central america were making gains in nicaragua, and were trying to make gains in el salvador. meanwhile, in africa, soviet allies were fighting in angola and were making new friends in other parts of sub-saharan africa. this picture seemed to contradict soviet commitment to better relations with the united states. why are they behaving this way? if they really want better relations with us, why are they on the march in what was then called the third world, but we now call the global south? [narrator] there's a political standoff, and neither side shows any signs of backing down. [ken adelman] the cold war was a view of the world where you had a communist totalitarian empire run out of moscow, and western countries led by the united states but including western europe and britain, facing off against each other. you have the soviet union, which is at this point a dominant superpower, a nuclear leader, neck and neck with the united states in terms of innovation and development. but at the core, their ideologies, as we know, are completely different. democracy versus communism. [narrator] what began as an ideological conflict has escalated into a terrifying nuclear arms race, and neither side wants to appear weak. the soviet union had something like 33,000 nuclear weapons. we had something like 22,000. way too many and way too scary. [crowd cheering] [reporter speaking russian] [tim, in english] the cold war was an existential struggle over the future of world civilization. and this is what makes this moment in history so dangerous, is you have both sides completely misunderstanding both the power of their adversary and the intentions of their adversary. [dramatic music playing] [dramatic music playing] [narrator] as a staunch anti-communist, ronald reagan crusades against everything the soviet union stands for. and he's not alone. [news reporter] president reagan's vast limousine has just drawn up here outside the norman porch, having come from buckingham palace. this is going to be the first time that an american president has addressed both houses of parliament here in westminster. [ken] ronald reagan met maggie thatcher, and was amazed that they thought alike. prime minister thatcher really did, despite her uptight bearing and her hairdo, really loved to be with ronald reagan. there was a certain magnetism. there was a certain glory to him. and she felt that tingling. [applause] [reagan] my lord chancellor, speaking for all americans, i want to say how very much at home we feel in your house. [ken] ronald reagan said that soviet communism will lie, cheat and steal to advance its mission around the world. that was the idea that ronald reagan had to delegitimize the soviet union. the decay of the soviet experiment should come as no surprise to us. we see totalitarian forces in the world who seeks subversion and conflict around the globe to further their barbarous assault on the human spirit. [ken] even before he became president, ronald reagan said, "the cold war will end, and i know how it's gonna end. we win, and they lose." [narrator] and he's about to ramp up the rhetoric even further. the march of freedom and democracy will leave marxism/leninism on the ash heap of history, as it has left other tyrannies which stifle the freedom and muzzle the self-expression of the people. [applause] [tim] ronald reagan is rallying the troops. he's rallying the nato alliance, trying to send a signal that the united states should be respected and even feared. the america of the 1970s, which was licking its wounds after losing the vietnam war, that's over. we're back, we're strong, and we should be feared. making america great again, if you will. we're gonna win. in the end, we will outlast them. [ken] people like me, hard-liners, thought that was terrific. most of the people in attendance of the speech didn't think it was terrific at all. why? because he was too radical. and it did cause a reaction in the soviet union. [nina] that speech, it was offensive. and it was actually offensive to a lot of people. a lot of people i remember saying, "well, who the hell are you to tell us that we are in the heap of history?" [tim] that fed into the sense in moscow that ronald reagan was a cowboy, and that he intended to use nuclear weapons against the soviet union in a war that is really fought psychologically. think about how dangerous that is. [narrator] closer cooperation between the u.k. and the u.s. is exactly what andropov fears. and in this cold war, andropov looks to his agents for proof. [ken] what intelligence did in those days were they gave us details of the overall picture. we could follow the number of intercontinental ballistic missiles that they had deployed. we could follow the number of new submarines. we could follow the number of new tanks. we could follow all these things that you could see from the satellite. and we could hear about rumblings from poland, or czechoslovakia, or hungary, or bulgaria, or the soviet union to russia. [raymond] this is very typical of my wife and my aunt eating ice cream in the snow outside the bolshoi theatre. i was head of sis station in moscow in early 1980s. civil servants are all signatories of the official secrets act. and what's not in the public domain is rarely not for discussion by us. our station in moscow was quite a small one. the whole apparatus of control and surveillance was very sophisticated. i mean, they used to paint radioactive paint on the bottom of our cars, you know, in order to track us. we were thin on the ground, really. it was extremely hard for outsiders to discover anything significant about the soviet political intentions. [indistinct radio chatter] [narrator] while british agents seek a foothold in moscow, in london, oleg gordievsky joins his fellow spies. [alexander] london was one of the major cities where soviet espionage was going on. the kgb quarters in london, it's called a station. kgb station. it's located in the russian embassy. that london job was extremely advantageous for gordievsky. it means that he was trusted, and that he was a decent operative, and it was good for him. [dramatic music playing] [narrator] at the kgb station in london, there are two agents above gordievsky in the hierarchy. one of them is the kgb station chief, arkady guk. [alexander] gordievsky was supposed to spend most of his time, 9:00 to 5:00, in the embassy doing his official job, being a diplomat. and then, during the evening or on weekends, he became a spy. the job was to get british secrets, especially secrets concerning britain's foreign policy. [narrator] gordievsky is under pressure to send intelligence to moscow that validates operation ryan. at the same time, he's had to hide the fact that he is a kgb spy from the british. in their eyes, he's just a diplomat. if he blows his cover or fails to feed the soviet leadership with good intel, he'll be on the next plane to moscow. [alexander] it was a very bold career move for gordievsky. but the british counterintelligence service, mi5, is considered one of the most professional services in the world. so i'm pretty sure he knew that it wouldn't be a picnic for him. a slow network is no network for business. that's why more choose comcast business. and now, we're introducing ultimate speed for business —our fastest plans yet. we're up to 12 times faster than verizon, at&t, and t-mobile. and existing customers could even get up to triple the speeds... at no additional cost. it's ultimate speed for ultimate business. don't miss out on our fastest speed plans yet! switch to comcast business and get started for $49.99 a month. plus, ask how to get up to an $800 prepaid card. call today! [lord robin butler] well, i've got various newspaper cuttings, but also photos with mrs. t. margaret thatcher was uncompromising in her dislike of socialism and of communism. and that is what drove her. i look so young and innocent. my job was really to make sure that 10 downing street worked well for the prime minister. yes, okay, certainly. margot! [narrator] margaret thatcher knows that it's not just politics that dictates the key moves in the cold war. [lord robin] margaret thatcher was fascinated by intelligence. part of it was the glamor. but also, she liked to collect as much information as possible, and intelligence was one of the sources. [indistinct chattering] there was a special box in number 10 in which there would have been regular reports of anything which became known about soviet activity in the u.k. [narrator] mi6 has a very big secret they are keeping from the prime minister. [narrator] but he isn't just a kgb spy pretending to be a soviet diplomat. [narrator] oleg gordievsky is a double agent. [narrator] in the '60s and '70s, gordievsky was based in denmark as a loyal and dependable kgb agent. and it's there that he begins to see things in a different light. [tim] the turning point for him was the soviet decision to crush the prague spring. an attempt at liberalizing the soviet-style regime in czechoslovakia in 1968. gordievsky has had an internal personal shift. he recognizes the inherent repressiveness of the soviet system which, as a kgb officer, he's sworn to defend. this is an ideological decision for him. [baroness meta ramsay] there are some things that i really cannot go into. i know you'll understand the nature of what we're talking about. when oleg arrived in london in 1982, it was invaluable to have the views of an insider in the russian embassy in london who knew the meaning of everything that was happening. [narrator] only eight people in the country know about this highly sensitive operation at a highly sensitive time. [baroness meta] it would be very, very few people anywhere who knew about oleg. you don't want anybody at any stage to betray the source, because accidents happen. usually, things are very, very carefully contained. only people who need to know. that's a great principle, "need to know." you have to keep completely tight to a very few people. [announcer] a specially extended nine o'clock news with michael buerk. [buerk] president brezhnev, ruler of russia for nearly two decades, is dead. for the soviet people tonight, five days of mourning begin. for the leaders who've grown old in his shadow, the chance of ultimate power. who will take over? [news anchor] administration officials said there will be no change in u.s. foreign policy toward the soviets until there is a change in soviet policy. [narrator] the soviet union finds reagan's aggressive tone not just insulting, but an existential threat. right now, the last thing the communist party wants is to be seen as weak. so it decides to promote someone with a very clear agenda. [news anchor] one advisor called front-runner yuri andropov a hard-line man who would be tough to deal with. [somber music playing] [narrator] just two days after leonid brezhnev's death, the head of the kgb, hard-liner yuri andropov, is promoted to the top job. [nina] andropov was quite a terrifying man. he came out of the apparatus of control, and he then ran the soviet union as a very controlled environment. [news anchor] tomorrow, vice president bush arrives. also, secretary of state shultz. bush's visit is intended as a gesture of conciliation according to western diplomats here. these diplomats worry that new communist party chief yuri andropov may have had to pledge a tough anti-washington line and big weapons buildup to win military support. they would like the american delegation to meet with andropov after the funeral monday, but have no assurance the meeting will be arranged. [susan eisenhower] here was a guy who came out of the soviet intelligence community. you had the feeling during andropov's period that, you know, things were really inert, and the old generation was still running the country. [nina] my family was simply terrified. my great-grandfather was khrushchev. he was the general secretary of the communist party of the soviet union. khrushchev dismantled, or as much as he could, he dismantled the kgb after stalin's death. so andropov, as my mother was convinced, was going to come back at us and the family with a vengeance. and, you know, there was even a talk that the gulags are going to be reinstated. he is going to push forward certain policies, including international policies. [narrator] as leader of the soviet union, andropov takes his operation ryan charts from the kgb back rooms to the heart of soviet policy. [tim] yuri andropov is a very conspiratorial figure. he is convinced that the united states is seeking domination over the soviets, and ultimately a nuclear victory. [nina] and so the soviet union has to be completely and utterly prepared to push that button. [narrator] all eyes are now on reagan in this uncharted new landscape. [nina] reagan was adamant that he's not going to deal with those red bastards. [dramatic music playing] and for andropov, reagan was that cowboy who is going to destroy the soviet union because he was playing in all these films like john wayne. reagan and andropov in some ways found each other. neither of them would back off. this was the moment when we were really scared of the nuclear war. that really stayed with me as the scariest time that i've ever experienced in my life in the soviet union. [narrator] the opposing sides in the cold war could not be further apart. britain's double agent is now vital to understanding the level of andropov's paranoia. [sir david omand] he's got access to the operations being run against the united kingdom by intelligence officers in the embassy. and he's got a knowledge of the politics of moscow. gordievsky, of course, was able to brief his handlers on the dossier. he knows a lot of people in the system, and therefore he's got this unrivaled insight into how decisions are taken, how they think in the senior reaches of the politburo. he would be able to leave the embassy on a regular basis and to a safe house, where he would be debriefed. and if he could smuggle documents out of the embassy, so much the better. there'd be arrangements for copying those in the safe house. [narrator] gordievsky's actions make him so valuable, mi6 decides to inform 10 downing street. in december 1982, margaret thatcher is told that a highly placed kgb spy now works as a double agent for the british. but she isn't told his name. two months later, gordievsky provides crucial intelligence. operation ryan is now official soviet policy. [tim] what the soviets didn't understand is that there was a possibility that operation ryan could be a self-fulfilling prophecy. operation ryan was a perfect example of starting with a conclusion, and then looking for justification for that conclusion. agents weren't asked, "are the american and the british on the verge of nuclear war?" they were asked, "prove to us, find the evidence that they are so that we'll be ready for it." and that was the fundamental flaw with operation ryan. [baroness meta] what oleg gordievsky really brought was an inside understanding of what operation ryan was really about. it was showing a paranoia. but the paranoia was real. when two sides don't know one another, they both misread signs. you can see how dreadful things can happen by that kind of misunderstanding. [narrator] gordievsky's intel on the deepening soviet paranoia is so vital to the british that they must conceal their source even from the americans. [tim] the reason the british did not wan