The policy of public frankness and accountability developed in the former Soviet Union under Mikhail Gorbachov (8)
I believe the answer is:
glasnost
(Other definitions for glasnost that I've seen before include "Openness (Russian)" , "Soviet policy of openness" , "Gorbachev's policy of "openness"" , "Gorbachev's policy from 1985" , "Policy of openness under Gorbachev" .)