Obama said, "We are a young country." It got me thinking about how young the US really is. Sure, countries like France have had their name for longer--but France's government has been violently overthrown by revolution more recently than the US.
Assuming that a government can be called continuous only since the most recent violent transition of power (I'd count a bloodless coup as violent), what are the oldest governments around? I'm thinking Vatican City is older (although they may not qualify, depending on how they achieved their current level of sovereignty).