It is 50 years since US President Richard Nixon's historic visit to China in February 1972. The visit - which included a meeting with Chairman Mao - normalised relations between the two countries for the first time in a quarter of a century. American diplomat Winston Lord was there when the two leaders came face-to-face. He spoke to Lucy Williamson for Witness History in 2009.

PHOTO: President Nixon during his visit to China (Getty Images)