That is a really fascinating view of history.
When 2 sides are at war, it takes 2 sides
to negotiate peace.
What I remember from back in the day....
Reagan and Gorbachev: Shutting the Cold War Down
When Gorbachev and Reagan Bonded, the Cold War Thawed
How Reagan Bankrupted the Soviet Union...
In the third paragraph of the first article, it quotes Reagan:
Asked at a press conference in Moscow in 1988, his last year in office, about the role he played in the great drama of the late 20th century, he described himself essentially as a supporting actor. “Mr. Gorbachev,” he said, “deserves most of the credit, as the leader of this country.”
So, if Reagan says that Gorbachev deserves most of the credit, why won't you believe him?
The Cold War wasn't an actual, real war, so there was no negotiation for ending. The closest we came was in negotiating the Two Plus Four Treaty which cleared the way for the reunification of Germany. But that was after Reagan was out of office.
I see Reagan as a thoughtful man, who realized that his
strident anti-communist stance was dangerous & unnecessary.
Reversing his previous course, he approached detente methodically.
He exhibited an openness, flexibility, & pragmatism that was
sorely lacking in a President like Trump. Of course, Gorbachev
was necessary for peace to happen. I credit both of them.
(BTW I never voted for Reagan.)
Many others deserve credit, in particular, Susanne Massie.
The Lady Who Warmed Up the Cold War
She had no formal position in government, so her role has
been largely forgotten. Yet detente might not have happened
without her.
Actually, I would credit Nixon with détente, which helped to warm relations with the USSR. Reagan ended it and set back US foreign policy 20 years. We never had détente with Russia since then. Even after the fall of the USSR and the end of Communist rule, the US attitude towards Russia has been largely negative.