Stoltenberg said the incident Tuesday requires "calm and diplomacy," and shows the need to update longstanding agreements meant to guarantee a maximum degree of transparency and predictability for military activities in Europe.
The NATO chief accused Russia of walking away from some of those accords, or exploiting their loopholes.
"The reality is that the rulebook of European security is out of date," Stoltenberg wrote in the op-ed made available to The Associated Press Wednesday.
He added that "this is not a new Cold War," but it is "a wakeup call."
More about:
-1780923278.jpg&h=190&w=280&zc=1&q=100)
