Almost two thirds of the 193 U.N. member governments are on Twitter. The 264 Twitter accounts of heads of state and government have been analysed now: Just about 30 seem to have ever done any own tweet. Most-followed account is @BarackObama (17,8 million followers total / 76 president´s peers and other governments). His account follows only Norwegian Prime Minister Stoltenberg and Russian Prime Minister Medvedev.

Full story: Study finds world leaders take to Twitter, but new ‘Twiplomacy’ has its limits – The Washington Post.