Russian president Dmitry Medvedev has joined Twitter:

That’s right: On a visit Wednesday to the microblogging site’s San Francisco headquarters, the Russian president signed up for his own Twitter account — @KremlinRussia – and began furiously posting tweets.
The Kremlin’s top honcho posted pictures of the view from his hotel room, as well as from a visit with Apple founder Steve Jobs. And Medvedev – or his minions – have been kind enough to post English-language translations of the Kremlin tweets.

Medvedev is at the White House today to meet with President Obama.