Answer:
Gorbachev
Step-by-step explanation:
Gorbachev is more important in the ending of the cold war because of the following reason which includes:
1. Gorbachev is the fourth leader during Regan's Presidency and he is the one that initiated the truce.
2. Gorbachev declared openly unilateral criteria to reduce the country’s armed forces by 500,000 soldiers and soldiers from Eastern Europe
3. He also claimed in the UN in December 1988 that Russian under his leadership will not be using an international class struggle.