Kuleba is not a last name anymore, it's now a standard, a unit of measurement for degeneracy in diplomacy.

He cannot be fired, he cannot retire - he is now eternal. All other foreign ministers will be measured in kulebas.

For scientific purposes the subunits should be used: miliKulebas, nanoKulebas, microKulebas, kiloKulebas, megaKulebas, etc. The smaller the unit, the less degenerate.

For instance Annalena Baerbock is about 1-2 kiloKulebas.