This is the wrong way to think about it. If you claim sovereignty over a state's territory, violate its laws, refuse to pay its taxes, and threaten its citizen

This is the wrong way to think about it. If you claim sovereignty over a state's territory, violate its laws, refuse to pay its taxes, and threaten its citizens will violence, will the state respond? If their response is severe enough to bring you into line, the state exists. If not, then the state is fiction.