Ukraine voiced its objections to Russia's presidency at CIS in 2017, because Ukraine believes that Russia violated international law by annexing Crimea and contributing to the conflict in the Donbas. This was stated by head of the Ukrainian delegation at the CIS summit in Bishkek, Ambassador of Ukraine to Kyrgyzstan to Mykola Doroshenko.
Doroshenko said that Ukraine will take part in the CIS census only in the case if Russia doesn't take into account residents of the Crimea in their census. Otherwise, Ukraine shall consider these results wretched, reported by RBK.
Russian President Vladimir Putin objected to the Ukrainian delegate, saying that "Russia has never annexed anything".
"Russia has never annexed anything. Everything that happened with the Crimea is the result of illegal actions during the coup," - he said. Crimea, according to Putin, has joined Russia in the result of the all nation will expression.
"Regarding Russia's presidency in the CIS, Ukraine has neither signed nor ratified the charter of the CIS and is unlikely to make any offers," - said Putin.
As it was reported, Ukrainian President Petro Poroshenko withdrew the representative of Ukraine in the CIS Executive Committee Anatoly Dron, and Ukraine Committee, and Ukraine left the CIS criminal investigation database. However, the CIS report that Ukraine continues to selectively participate in the work of the Commonwealth.
Ukraine has not yet ratified the CIS Charter, therefore, formally is considered only an observer in this organization, and not its member.