Ukrainian President Volodymyr Zelensky has called on Western countries to ban all Russian visitors - and the Kremlin has responded with scorn.
Russians should "live in their own world until they change their philosophy", Mr Zelensky told The Washington Post.
Such a ban, he argued, would be more effective than the current sanctions, which bar Russian airlines and officials linked to the Kremlin.
Russians can still get EU and US visas.
Mr Zelensky's call may get only limited support, as Russia - despite sanctions - has extensive global business ties and Russian tourists are still welcome in holiday destinations such as Egypt, Turkey and the United Arab Emirates.