In 1926 Vita Sackville-West travelled to Iran to visit her husband, Harold Nicolson, who was serving as a diplomat in Teheran. Her route was deliberately slow-paced - she stopped in Egypt, where she sailed up the Nile to Luxor; and India, where she visited New Delhi and Agra before sailing across the Persian Gulf to Iraq and on through bandit-infested mountains to Teheran. She returned to England in an equally circuitous manner and despite travelling...