[rat87]

That article is terrible and Mearsheimer is now a laughingstock. Not just because he was totally wrong with his claims about Russia and Ukraine, but because he refuses to admit it.

Note that realism isn't about being realistic but is an ideology/methodology for predicting other nations actions and deciding what actions to take yourself. It involves simplifying nations because realism believes conflict is about about power and ignores ideology, nationalism, politicians personal whims and the will of the people.