Lavrov’s comment comes as several top Western officials, including EU High Representative for Foreign Affairs and Security Policy Catherine Ashton and US Assistant Secretary of State Victoria Nuland visited the opposition protest camp in the capital city of Kiev earlier in December.

“We would prefer it if some of our European colleagues did not behave in such an unceremonious manner over the Ukrainian crisis,” Russia’s top diplomat told reporters on Tuesday.

“Members of several European governments rushed to the Maidan (Independence Square) without any invitation and took part in anti-government demonstrations in a country with which they have diplomatic ties. This is simply indecent,” Lavrov added.

Last week, Ukrainian Foreign Minister Leonid Kozhara condemned the West for supporting protesters at a time of crisis, saying their action is “considered in Kiev as meddling in the internal affairs” of the country.

Kozhara advised foreign diplomats to be “objective and balanced in assessments of internal processes in Ukraine, and avoid unilateral statements and comments that do not reflect the real state of affairs.”

Ukraine has been rocked by anti-government protests after President Viktor Yanukovych refrained from signing a trade agreement with the European Union at the third Eastern Partnership Summit in the Lithuanian capital Vilnius on November 29, 2013.

Kiev refused to sign the agreement after EU leaders called on Ukraine to allow jailed opposition leader Yulia Tymoshenko to travel overseas for medical treatment.

EU leaders have blamed Russia for Ukraine’s refusal to sign the deal with the bloc, saying they will not allow Moscow to “veto” deals in Eastern Europe.

Lavrov, however, accused Western countries of losing “their sense of reality” over Ukraine’s crisis. He also charged them with using blackmail to cut Kiev off from Russia.