Well, I suppose canning the skyhawks helped, but I'm faintly pleased that we've just been declared the most peaceful nation on earth.
I expect their methodology is open to question, and I doubt they included the value of the enormous moat*, but it's nice all the same.
And after centuries of beating each other up, and two thoroughly epic wars early last century, I think the European nations can feel reasonably proud of their high standings in this study. Next challenge is to try to spread some of that peacefulness to other regions (maybe starting with the USA, which is ranked 85th).
* Also known as the Tasman Sea and the Pacific Ocean.