we are just four days away from the new year and just in time for 2019 nbc's brian williams and nicole wallace have a look back at the biggest stories of 2018. >> number ten -- men we are calling the goodfellas. >> because the word good is there, you mean the opposite? you mean the ideal of goodfellas. >> donald trump is a great unifier. >> michael cohen pled guilty to eight felony charges. >> so he's lying very simply to get a reduced sentence. okay? >> michael flynn who served as national security adviser walked into court to plead guilty to false statements to the fbi. >> you know what? he happens to be a very good person. >> number nine -- our planet.