Billion Dollar Spy (1970)

Set against the high-stakes backdrop of the late Cold War, Adolf Tolkachev, an ordinary man who risks everything to pass thousands of pages of top-secret Soviet intelligence to the U.S. Despite repeated rejections by a wary CIA, Tolkachev persisted, embodying the courage to stand against a regime that betrayed its own people. Finally, finding an ally in CIA agent Tom Lenihan, Tolkachev was able to fundamentally shift the balance of power, proving that true patriotism lies not in blind allegiance but in the willingness to challenge a government when it strays from its ideals.