Editing Democratic peace theory (section)

===European peace===
There is significant debate over whether the lack of any major European general wars since 1945 is due to cooperation and integration of liberal-democratic European states themselves (as in the [[European Union]] or [[Franco-German cooperation]]), an enforced peace due to the intervention of the Soviet Union and the United States until 1989 and the United States alone thereafter,{{sfn|Mearsheimer|2010}} or a combination of both.{{sfn|Lucarelli|n.d.}} The debate over this theory was thrust in the public eye when the [[2012 Nobel Peace Prize]] was awarded to the European Union for its role in creating peace in Europe.{{sfn|Joyner|2012}} Notable major wars in Europe after 1945 are [[Yugoslav Wars]] and [[Russian invasion of Ukraine]], which follows the prediction of the interactive model of democratic peace.<ref name="interactive"/>