This is a bad idea as it will not only harm Russia. It will also break (possibly critical) services in other countries consuming a service hosted on a .ru domai

This is a bad idea as it will not only harm Russia. It will also break (possibly critical) services in other countries consuming a service hosted on a .ru domain (for example, a Yandex API). Also I'm not sure how ICANN can contribute to revoking TLS certificates.