Gorbachev's Glasnost and Perestroika impacted negatively the sovereignty of Eastern European Satellite.
Explanation:
The reasons behind this answer are that the Perestroika allowed certain freedoms that the government had repressed in previous times. Like leaving certain economic sectors to change from government-aligned to decide their processes by themselves. This is also what happened to Eastern European Satellite states, Gorbachev provided them liberties and they used them to change their system because the Perestroika damaged their economies and conditions of life. Leading to the collapse of the Soviet Union.
