In 1963, Stanley Kubrick cast Sellers to appear in "Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb" alongside George C. Scott, Sterling Hayden, Keenan Wynn and Slim Pickens. Sellers and Kubrick got along famously during the film's production and had the greatest of respect for each other, also sharing a love of photography. The director asked Sellers to play three roles: US President Merkin Muffley, Dr. Strangelove and Group Captain Lionel Mandrake of the RAF. Sellers was initially hesitant about taking on these divergent characters, but Kubrick prevailed. According to some accounts, Sellers was also invited to play the part of General Buck Turgidson, but turned it down because it was too physically demanding. Kubrick later commented that the idea of having Sellers in so many of the film's key roles was that "everywhere you turn there is some version of Peter Sellers holding the fate of the world in his hands". Sellers was especially anxious about successfully enacting the role of Kong and accurately affecting a Texan accent. Kubrick requested screenwriter Terry Southern to record in his natural accent a tape of Kong's lines. After practising with Southern's recording, Sellers got sufficient control of the accent, and started shooting the scenes in the aeroplane.