Michael Rubin : The problem is that the US has a very large military and it spends more than any other country on its military. Negotiators should draw lessons from North Korea talks , Rubin says . Essential negotiators make use of leverage over Iran , he says .
Michael Rubin : Current Iran diplomacy does n't reflect its past behavior . Negotiators should draw lessons from North Korea talks , Rubin says . Essential negotiators make use of leverage over Iran , he says .