Iran's new Foreign Minister Javad Zarif joined President Hassan Rouhani in tweeting "Happy Rosh Hashanah" greetings Thursday, on the occasion of the Jewish new year's holiday, setting off a new wave of amazement, and some disbelief, in both the social media and policy universes.
Happy Rosh Hashanah
— Javad Zarif (@JZarif) September 5, 2013