“We ask the Secretary General to immediately use the arbitration procedure,” RIA Novosti quoted Leonidchenko as saying.

According to him, problems with visas concern not only Russian diplomats, but also Secretariat staff from among the citizens of Russia.

He added that in the fourth year of discussions, it is time to move on to action.

Earlier, Russian Deputy Foreign Minister Sergei Ryabkov suggested that the United States send diplomatic staff to Moscow so that "at least consular services are provided in a more or less normal volume."