“We cannot rule out a scenario in which nuclear material can be brought to Ukraine from third countries,” he said in an interview with RIA Novosti.

Earlier, the Russian Defense Ministry said that the Kyiv regime was preparing a provocation with poisonous substances in the city of Pervomaisky in the Kharkiv region.

Polish Deputy Prime Minister, Chairman of the National Security and Defense Committee Jaroslaw Kaczynski said that Poland is ready to host US nuclear weapons.

In turn, Dmitry Polyansky, First Deputy Permanent Representative of Russia to the UN, said that the United States needs to remove its nuclear weapons from Europe.