Answer:
Reagan acknowledges Gorbachev's role by mentioning the results of the policies he instituted on the Soviet Union, those being "Perestroika & Glasnost".
Explanation:
"We hear much from Moscow about a new policy of reform and openness. Some political prisoners have been released. Certain foreign news broadcasts are no longer being jammed. Some economic enterprises have been permitted to operate with greater freedom from state control." These are the results of those two policies.