Today in 5 LinesRick Gates, a former Trump campaign aide, pleaded guilty to conspiracy and making false statements, and agreed to cooperate with Special Counsel Robert Mueller’s investigation into Russian interference in the election. Mueller also issued new charges against former Trump campaign manager Paul Manafort, alleging he secretly paid former European politicians to lobby on behalf of Ukraine. During a speech at the Conservative Political Action Conference, President Trump criticized the armed officer who failed to stop the gunman in last week’s mass shooting at a Florida high school, and doubled down on his suggestion to arm teachers.