@ApolloPlus40 - Frank Borman: The Soviet Tour
Apollo 8 commander Frank Borman took a "sight-seeing" tour of the Soviet Union in the early summer of 1969. His visit coincided with the Moon landing, the culmination of the long space race, but on 3 July his focus was on lobbying for a joint Soviet-American mission, a topic his Soviet counterparts had alternately encouraged and discouraged in previous years.
The two countries did eventually run a joint mission, the Apollo-Soyuz Test Project, docking a surplus Apollo command module from a cancelled lunar mission to a Soyuz capsule in1975. NASA provides a history here: http://bit.ly/xIIDP with specific reference to the personal relationships between astronauts and cosmonauts here: http://bit.ly/pxLvp
