Since the "historic handshake in space" when a US Apollo and Soviet Soyuz capsules docked in 1975, the two countries have in fact grown increasingly close. This relationship involves sharing technology (which is almost all 'dual use' i.e. it could be used for military purposes as well as civilian, thus requiring a high degree of trust), scientific knowledge and working side-by-side to build and support the ISS. With the involvement of the 11 member states of the European Space Agency as well as Canada, Japan and Brazil in the project, space is one of the few spheres where governments have been able to put aside their differences in pursuit of something more fundamentally important to humanity.