It worked for Reagan with Gorbachev.
Gorbachev was extremely bad and weak leader.
Who manages to completely dismantle and run down the world's second largest industrial power with close to 300 million people and biggest military in few years without a shot fired? Totally out of control. I guess that takes some serious skills in itself though.
He had in Germany alone stationed so much firepower that the withdrawal was the biggest movement of armed forces since ww2.
Obama would have made Gorba his bitch.
Must be the most failed leader world has ever seen anywhere.
He has himself admitted his mistakes later and regretted the catastrophe.