Since they're ccTLDs, the governments of those countries can designate new operators. The root nameservers (operated by a variety of operators, under ICANN's su

Since they're ccTLDs, the governments of those countries can designate new operators. The root nameservers (operated by a variety of operators, under ICANN's supervision) would have to update their top level record but they are generally hands off for ccTLDs (because if they were not, a country could just mandate its ISPs use a different set of root servers)