WHAT Letter to Iran?

…[Freshman Arkansas Senator Tom] Cotton got 46 other senators to sign this letter in ink. “Because it was an open letter, it was not sent to Tehran but rather posted on Senator Cotton’s website and social-media accounts,” Caroline Rabbitt, Senator Cotton’s communications director, explained to me last week. Cotton & Co. never even dropped an envelope in the mail.

The fact that Cotton and his colleagues created a letter to nowhere seems to have escaped the loudest voices in this national conversation. …