“This is an obvious provocation, a completely unprecedented case in diplomatic work,” RIA Novosti quoted him as saying.

On September 30, Russian President Vladimir Putin and the heads of the Donetsk and Lugansk People's Republics, Zaporozhye and Kherson regions signed agreements on the accession of these regions to Russia.

Later, the State Duma adopted federal constitutional laws on the entry of the DPR, LPR, Zaporozhye and Kherson regions into Russia.