Twitter and the evolution of #digitaldiplomacy

As we prepare to celebrate Twitter’s 10th anniversary in March, here are 5 tweets that show the evolution of digital diplomacy and the way governments and political leaders engage with the world.
1. The first ever email conversation between two head of state/government:
2. The first ever tweet:
3. The creation of the hashtag:
4. The first ambassador to use Twitter as an official tool of communication:
5. And (from 2011) a new theory for the foreign-policy frontier:
And to conclude, not a tweet, but a very inspiring TED Talk from 2010 by Joseph Nye on global power shifts: