How do you think, when governments of countries are going to start using blockchain technologies in international agreements? Can smartcontracts protect from falsity on that level?
Some companies are working on solutions with blockchain to help them interact in a secure and safe environments but these blockchains are private only for those companies that participate in them. So I really think in future, if not blockchain, some other tech will be used for governments. Governments can implement blockchains within themselves or between others. For some processes it can potentially help them in the long run. However I am not familiar if any of them are taking this into consideration to use blcockhain and smartcontracts between their agreements etc. will have to wait and see.
The way I see it, government will attempt to create their own coins, but, those coins will be centralized. Centralized Crypto Coins.
Hopefully people won't buy into that and will eventually stick with the decentralized versions of the coins.
Money is one application of the blockchain. You can use blcockahin without the need to create your coins, you can simply have blockcahin as any database right now and enable smartcontracts on them. Some countries are looking to create their own crypto right now, but this is another topic. I think that you have missed the point of OP.