Krauthammer's entry today was unbelievably weak in its attempt to explain the revolt against establishment politics as misguided rhetoric instead of the fact that big money controls our election process, and thereby Congress.
Out the door Krauthhamer makes the claim that as President, Obama is responsible for seven years of government failure, asking rhetorically, "who's been in charge?" Not one mention of a obstructionist Republican Congress with rating hovering at 20% since 2010 (Gallop)  while Obama's rating has been "on a par with Reagan" (Pew research).
Then to write that "...Sanders is careful never to blame Obama directly" is simply a lie, as Clinton has blasted Sanders for criticizing Obama, to which Sanders replied that he had disagreements with the President, as was a Senator's right.  
Lack of space brings this to a close. Sanders does not offer magic to address our problems. His plans are detailed here: https://berniesanders.com/issues/income-and-wealth-inequality/