Without RPKI, it would be easy for many governments to cut off Russia's internet access by launching a BGP attack.

Assuming the Netherlands was acting unnilaterally, Russian ISPs would be able to coordinate with other ISPs to get back online via other routes. Assuming Russia's enemy wanted to press the issue, it would quickly devolve into a political question of who wants to allow Russian peering, who does not, and who is willing to not peer with peers of Russia (and peers of peers, etc).

This has always been the case. The internet is a network of networks; all of which are subject to control by their host governments should they choose to exercise it. With or without RPKI, a partitioning of the Internet for a significant period of time was always going to be a political decision.

> should they choose to exercise it

Until other networks choose to exorcise them and their control with it. If you play unfairly often enough, you get depeered.