Pretty much all Cold War-era politicians, the ones that mattered, Soviet and American, were pieces of shit. This is not in doubt here in this study. Writ large, they were fanatic ideologues, the Americans much more so, it seems, who refused to bend to the other's will for fear that their "way of life" would be threatened. This is a stupid foundation on which to view one's strategic, geopolitical aims, for what is a political ideology, communist or capitalist, but some dumb crap someone else that up that everyone defines their own way anyway?
What really comes out from reading this book, is how much the actual leaders themselves were really, really interested and to varying degrees invested in trying to end the Cold War, even before it began.
Yes, yes, we all know what a dick Stalin was, but it was never so cookie cutter black-and-white as it is often portrayed. From Stalin through Chernenko, the over-riding Soviet strategic aim was to protect the Soviet Union. And meddle in the Third World here and there, for various reasons, sure. The Soviets never, ever, ever received from the US any reassurance over these fears and this was part of the problem. Neither side could countenance the fears of the other and act on it. There was a lot of mutual misunderstanding and over-blown fear-mongering, especially in the US. The Soviets wanted secure borders and an inward focus on their economy. The US wanted to protect the "American way of life" and dominate global resources. This is where we get to the who's-a-bigger-dick bit. And the hero in all this, after we wend our way through Afghanistan and the collapse of the communist regimes of eastern Europe is Gorbachev.
Gorbachev was the one leader on either side who said, "Fuck. It.", screw ideology, screw the military-industrial complex and basically committed political suicide by making concession after concession to the US. Despite Reagan's genial antics, he never really went to great pains to undertake anything proactive towards Gorbachev. Gorby went out on a limb to do what everyone had always talked about: ending the Cold War.
Leffler does a good job of detailing (sometimes over-detailing) the inner machinations of both sides. This is not Red Dawn, people. It was grey as hell. The book could've used a bit more on the proxy conflicts. African decolonization and Afghanistan are mentioned, but issues with China, Japan, the Middle East...much of this is left to the wayside.