The allegation was "malicious propaganda" by the US Department of State, which is aimed at pushing Kiev to escalate the conflict in eastern Ukraine, Naryshkin told a Russian TV program on Saturday.
Russia should remain calm and reinforce its defensive capability as the US is inciting the Ukrainian authorities to attack the insurgent Donbass region, he added.
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Kremlin Spokesman, Dmitry Peskov has also denied recent reports in the West and Ukraine about a Russian plan of aggression against Ukraine, saying that "this hysteria is being boosted artificially," Xinhua news agency reported.
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