What was the name given to gorbechev’s policy of political openness?

This name was "Glasnost". 

Glasnost was the name used for more transparency and openness in the government of the Soviet Union that Gorbachev was calling for.  It has a meaning similar to "open to public knowledge).

The statistics for the eastern war are grim. more than three-million men died in the fighting, more than nine-million men were wounded, and every major country which participated lost its form of government.