NYT: Making the issue a personal one, Mr. Cotton accused Mr. Javad Zarif, Iran’s foreign minister, of being a coward during his country’s war with Iraq.

Cotton: I understand if you decline [Zarif] after all, in your 20s, you hid in US during Iran-Iraq war while peasants & kids were marched to die 3/4.

Declining to be goaded, Mr. Zarif said that diplomacy should trump personal attacks. To demonstrate that, he congratulated Mr. Cotton on his new baby.

Zarif: Serious diplomacy, not macho personal smear, is what we need. Congrats on Ur new born. May U and Ur family enjoy him in peace.

http://www.nytimes.com/politics/first-draft/2015/04/30/senator-tom-cotton-gets-personal-with-irans-foreign-minister/