If all humanity ALREADY obeyed Jesus and never unjustly aggressed against anyone, then Berrigan's message was a no-brainer.  But that's not the world, and Christians need good guidance in how to respond to a real world that has Hitler, Pol Pot, ISIS, etc.  In such a world, Berrigan's teaching was foolish.  Followed to its logical conclusion, which is where my questions took him, his teaching would have us without an army.  Do you support that with a straight face?