Great explanation why so many conservative commenters here are actively defending Russian intervention in a U.S. election to help their side win! In spite of expert opinions and evidence about Russian interventions to manipulate the election in favor of Trump, conservatives ignore and deny that these facts have any truth to them because it violates their 'core beliefs'. A prime example of 'cognitive dissonance' according to the definition you provided! 

But I guess you won't be willing to see that, since it's rather 'uncomfortable' to look in a mirror and see your own flaws and misperceptions.