"Pressuring Ukraine in one direction, while warning that it faces an 'either-or' choice- either the EU or Russia- is essentially trying to create a sphere of influence," Lavrov said at a press conference with his German counterpart Frank-Walter Steinmeier, who is on a two-day visit to Moscow.
"That is obvious and no beautiful words can change that," Russia's top diplomat said.
Ukraine, an ex-Soviet nation of 46 million people, has been in chaos since November when President Viktor Yanukovych ditched a planned EU trade and political pact in favour of closer ties with Moscow, stunning pro-EU parts of the population and sparking violent protests.
"It seems wrong to me and impolite to daily send various emissaries while talking about a free choice. They arrive in Kiev without invitations and pressure the Ukrainian authorities to make the choice that favours the EU and US," Lavrov said.
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In a lengthy newspaper article published yesterday Lavrov warned that Russia's relations with Europe were facing a "moment of truth" over the situation in Ukraine.
The warning came as EU Enlargement Commissioner Stefan Fuele called on Ukraine to take "urgent steps" to form a new government and reform the constitution, key opposition demands in the crisis-hit country during a visit to Kiev.