As U.S.-Cuba relations continue to improve following President Barack Obama’s historic visit, Showtime will examine a period when they were at the lowest: during the Cuban Missile Crisis of 1962. The pay cable network has put in development a four-hour limited series based on the book The Armageddon Letters, by James Blight and Janet M. Lang. It will be produced by two-time Oscar winner Albert S. Ruddy (The Godfather, Million Dollar Baby) and Oscar nominee Mike Medavoy (Black Swan, Shutter Island).

The book is based on The Armageddon Lettersthe actual 43 documents obtained under the Freedom of Information Act that chronicle the buildup to the Cuban Missile Crisis when the world teetered on the edge of nuclear destruction. The book is organized around the letters exchanged during the crisis between President John F. Kennedy, Soviet leader Nikita Krushchev, and Cuban leader Fidel Castro.

Phil Alden Robinson (Field Of Dreams, Sum Of All Fears) is set to write the adaptation and direct the potential limited series. Ruddy and Medavoy executive produce with Benjamin Anderson, and Todd Martens, with Alexandra Ruddy for Ruddy Productions.

Showtime recently filmed the Season 5 finale of its comedy House Of Lies in Cuba, marking the first time an American scripted series has shot in the country since the U.S. and Cuba restored diplomatic relations last summer.