D.D. Guttenplan, writing in the Nation, echoes what has become a recurring call for a “truce” between supporters of Bernie Sanders and Elizabeth Warren. For Sanders supporters, this truce — as far as I can tell — can mean one of two things:

1) It is okay to argue that Sanders is preferable to Warren, even though this implies that she is the inferior candidate — but we should simply try to do so in a way that avoids unnecessarily alienating Warren supporters. Or,

2) Our priority is to avoid alienating Warren supporters. And since implying that she is the inferior candidate risks offending them, we should therefore avoid arguing that Sanders is the preferable candidate.

If the truce means (2) then obviously Sanders can only honor it by immediately suspending his campaign. After all, even the most diplomatic, substantive, and constructive efforts to differentiate Sanders from Warren can be taken as a slight against her — and since maintaining peace among the two camps is our priority, it really doesn’t matter whether that reaction is fair or not. All that really matters in this case is keeping peace with Warren supporters, which means that he should just end his campaign right now.