Ukraine's representative in the security subgroup of the Trilateral Contact Group, former prime minister, former defense minister and former secretary of the National Security and Defense Council of Ukraine, Yevhen Marchuk, has recalled that the text of the Budapest Memorandum stated the obligations, including for Russia, not to use not only nuclear, but also any other weapon against Ukraine.

"Lavrov just blatantly deceives journalists, hoping that no one will look in the original text. [The memorandum says that] not only nuclear, but also any of their weapons will ever be used against Ukraine," he wrote on his Facebook page on Monday.

According to Marchuk, allegations about the absence of obligations of signatories in the memorandum are also untrue.

"Article 2 clearly states in English that the signatories reaffirm their commitment... that none of their weapons will ever be used against Ukraine," he said.

Russian Foreign Minister Sergei Lavrov said at a news conference on Monday that Russia had not violated the provisions of the Budapest Memorandum.

"We answered [these] questions many times, including on the 1994 Budapest Memorandum, according to which Ukraine renounced nuclear weapons, and Russia pledged not to use nuclear weapons against Ukraine. I recall that we have never applied or threatened Ukraine with nuclear weapons, so there has been no violation of the Budapest Memorandum," Lavrov said.

At the same time, he said that Ukraine, in contrast to the Budapest Memorandum, pledged in a separate statement not to "encourage racist, neo-Nazi, xenophobic trends, and what happened after the Maidan was a gross violation of these obligations by our Ukrainian neighbors."