How did relations between the u. s. and soviet union change when mikhail
gorbachev became the soviet leader?

a-the soviet union collapsed from economic struggles and gorbachev opened
relations with the u. s.

b-reagan believed gorbachev wanted to truly reform communism and opened
negotiations with him

c-the cold war reached its height when reagan introduced the star wars
initiative.

d-reagan believed gorbachev wanted to enter a new arms race with the u. s. and
challenged him.