Before I start, I want to say that I am asking this out of pure curiosity and interest. I am not in this situation, and I do not know anyone in this situation.
I read that the Norwegian Directorate of Immigration can revoke previously issued citizenships (in some extreme cases). It turns out that Norway is not the only country that can do this. Other nations may also revoke the citizenships of naturalized citizens, for example the US, Canada and Finland. I am sure there are others as well.
Now, this got me thinking. I know that having a citizenship is a human right, so that leads me to assume that only dual nationals can have one of their citizenships revoked. Otherwise, revocation would render the person stateless.
So, let's say someone was under investigation for something serious enough to potentially lose them their naturalized citizenship. Could they then hurry up and renounce their native citizenship? This would then leave them with only one citizenship, the naturalized one. I figure that would make it impossible for the government to revoke it, because it would render them stateless, making revocation a violation of international human rights law. Is that correct?