What if, for whatever reason, one or both members of the Soviet crew during the Apollo-Soyuz Test Project mission in 1975 decided to defect to the United States? This would be done during the actual mission in space (to make a bold public statement) while the Soviet crew was visiting the Apollo spacecraft (which would be considered U.S. territory, right?)
How could this be done, i.e. would the Soyuz be able to land somewhere in the United States or other allied nation? What are the short and long term political consequences?