Regards @certain.
The field of applicability of blockchain is infinite. Investment capital accumulates considerably. Governments could not leave this phenomenon aside.
In addition to this, whatever innovation and development in the economy's cryptoconce and blockchain technology will have to be developed directly to the country's economy. Therefore, all countries need to approve this technology.
I imagine that your doubts lie in the currency exchange currency that nations would use to negotiate.
Remember that the blockchain is global in scope. With this, borders practically disappear.
The FIAT would take a back seat if we talk about financial exchange. With the adoption of a strong cryptocurrency (chosen among several that already exist or one of new creation), with support and recognized by both nations, a negotiation could take place.
For the time being, the development of Switzerland in this matter, apparently, is internal. At least until now.
Yours, Juan.