And I uderstand the policy of Wikipedia.
A name can be considered as widely accepted if a neutral and reliable source states: "X is the name most often used for this entity". Without such an assertion, the following methods (not listed in any particular order) may be helpful in establishing a widely accepted name 
This makes sense , but stil I just can't acept it. 
Kiev (Russian: Киев) or official Kyiv (Ukrainian: About this sound Київ (help·info) IPA: [ˈkɪjiw] - non-sense. Why should russian way of pronunciation  be the official name if the country is Ukraine and the only one officail language is ukrainian? I am not asking just to wipe out Kiev from the list, but Kyiv should be the main one and the Kiev - alternate.