When I was much younger, I used to subscribe to The Bulletin of the Atomic  Scientists.  If you are unfamiliar with the organization, they maintain the "Doomsday Clock" that attempts to measure how close humanity leans to a nuclear doomsday.  The society was founded in late 1945 by participants in the Manhattan Project, and the magazine has published continuously since then. 

In the 1950s, 1960s and 70s, the clock moved with alarming frequency.  I was young enough to know about, and look for, nuclear fall out shelters, and to have become familiar with a few of the mostly likely war propagation scenarios.  These were scary times.  From two minutes to midnight (doomsday on the clock) in 1953 to 17 minutes in 1991, the clock has moved generally, albeit erratically, towards safer zones.  The Cuban Missle Crisis was not a high point.  More recently, the 90s were not bad years.  But the trend in the last few years has not been positive. 

The clock has just moved.