Renouncing Former Nationalities
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| burning your passport doesn't renounce your citizenship |
According to the colourful "so you want to be a Japanese" guidebook, the specific condition that relates to the holding of other nationalities is written as
The US is one example of a country that doesn't allow this, which is why former US nationals are given a two year grace period after they take Japanese citizenship in which to formally renounce (a process which is about to get very expensive in a week or two, so get in fast!)
The UK where I hail from does allow this, so a short period of time was spent
Naturally, this was a little unsettling, as my application for citizenship hadn't been approved at that point. If that was rejected, wouldn't I be a bit stuck? No, explained the case officer. When you renounce your nationality in order to become a citizen of another country, the renunciation is voided if another country doesn't "claim" you within six months.
Your case officer will know which procedure is necessary for your country and will instruct you accordingly. But if you're planning on leaving the country for any reason during the 12 to 18 months the application process typically takes, it's a good idea to discuss this ahead of time so you don't suddenly find yourself without a passport.
