Hmm lets see dont know about peaceful 100% but in my eyes countries that are not trying to get into wars actively are (in no particular order) :
1) Canada
2) Switzerland
3) Denmark
4) Finland
5) Sweden
#5 in the list definitely don't belong there. Sweden has replaced South Africa as the rape capital of the world many years ago. The Somali, Afghan and other Muslim immigrants have turned cities such as Malmo as no go zones for the native Swedes. Unfortunately, the neighboring Finland is also slowly moving in the direction of Sweden.