I assume by plane - probably to West Berlin (?) and then by train (?) Just speculation on my side, though - but I know that when Tamerlane and Reprise were sold to the Soviet Union a few years later, they went by plane from the US (though it never crossed by mind to try to find out where that plane went). Those two horses were officially bought by state-owned farms (though everything is state-owned anyway so it's all a technicality - it all belonged to Brezhnev )