Why we've Never Lived in Such Peaceful Times as Now

In The World Is Not Falling Apart published by Slate last month on 12/22/14, Steven Pinker and Andrew Mack argue that world violence is at a new low.  We've never had it so good.

All I can say to all of the historical data they present is, huh?  While actual violence may be at historic lows the threats of violence has never been higher. Examples:

• North Korea has scrapped the armistace that ended the Korean war.  
• Jihadists can and have struck at any time and anywhere.
• Iran is moving rapidly towards nuclear weapons.

One could go on.  Historic trends up to now may be down but indications for the future are ominous.