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Well, well. The Swiss do have an extradition treaty with the USA:

https://www.state.gov/wp-content/uploads/2019/02/97-910-Switzerland-Extradition-Treaty.pdf

As does Grenada:

https://internationalextraditionblog.com/2011/05/02/grenada-extradition-treaty-with-the-united-states/

But here’s the clincher: China does NOT have extradition treaties with either Grenada or Switzerland:

https://www.quora.com/With-what-countries-does-China-have-an-extradition-treaty

But here’s the clincher: China does NOT have extradition treaties with either Grenada or Switzerland
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Very interesting, that's exactly how rats like Justin Sun think. It may be the reason to land in Grenada.