A spokesman for Russian President Vladimir Putin says a comment by a senior Russian official who called Ukrainian President Petro Poroshenko "a Nazi" do not represent the Kremlin's official position.
Dmitry Peskov was quoted by Interfax as saying the remark by Sergei Glazyev, a senior Putin adviser, "does not reflect the official point of view" of the Russian government.
In an interview with the BBC released on June 27, Glazyev also said Poroshenko's signing of a key accord on closer ties with the EU was as illegitimate as the Ukrainian president himself, who Glazyev argued had not been elected by people in eastern Ukraine.
Poroshenko on June 27 signed an agreement on closer economic ties with the EU. Kyiv and the EU signed the political part of the agreement in March, after Russia's annexation of Crimea.
The pact is strongly opposed by Russia.
Based on reporting by the BBC and Interfax