Three neo-Nazis have pleaded guilty to domestic terrorism charges related to a plot to attack power grids across the United States. Jonathan Frost, 24, Christopher Cook, 20, and Jackson Sawall, 22, each pleaded guilty to one count of conspiring to provide material support to extremists, the Justice Department said Wednesday. “According to these pleas, three individuals engaged in a disturbing plot to attack our country’s energy infrastructure, damage the economy and stoke division in our society, all in the name of white supremacy,” Assistant Attorney General Matthew G. Olsen said in a statement . Frost and Cook met in an...