As the current U.S./Russia relationship continues to be strained, we had a chance this week to look back at the Cold War dynamic between the United States and the Soviet Union.

Author Ken Adelman joined us to discuss his new book, "Reagan At Reykjavik," a first-hand account of the historic 1986 Reagan-Gorbachev summit in Iceland. Adelman argues this was the definitive weekend that was the key turning point in the Cold War. He should know -- he was there, serving as President Reagan’s arms control director.

Here's our full conversation with Ken: