 In April 2014, tensions between the US State Department and the Russian Ministry of Foreign Affairs over the 2014 Crimean crisis devolved into tweets, with both ministries using the hashtag #UnitedforUkraine to convey opposite points of view.Tweeting to a global audience also poses challenges to leaders and diplomats.In early 2014, Iranian President Hassan Rouhani decided to delete a controversial tweet that received much media attention, though it was likely intended for his domestic audience.