Rebuffed by Western countries, Russia doubled down on its claim that Kyiv is preparing to use a "dirty bomb" in Ukraine and said it would bring the issue to the UN Security Council on Tuesday.

Earlier, Russia's Defence Ministry said on Monday that it had prepared its forces to work in conditions of radioactive contamination, after Moscow accused Ukraine of planning to detonate a "dirty bomb" - something Kyiv has strongly denied.

After weeks of rising international tension following threats by President Vladimir Putin to defend Russia's "territorial integrity" with nuclear weapons, it was the first concrete statement from Moscow of a change in its forces' state of preparedness.

Defence Minister Sergei Shoigu told Western defence ministers on Sunday that Moscow believed Ukraine was preparing to detonate such a bomb - a device using conventional explosives packed with radioactive material to spread contamination over a wide area.

The head of Russia's nuclear, biological and chemical protection troops, Lieutenant General Igor Kirillov, told a media briefing on Monday the aim of such an attack would be to blame the resulting radioactive contamination on Russia by accusing it of detonating a low-grade nuclear weapon.

Ukraine wanted to paint Russia as a "nuclear terrorist", he said. "The aim of the provocation would be to accuse Russia of using a weapon of mass destruction in the Ukrainian military theatre and by that means to launch a powerful anti-Russian campaign in the world, aimed at undermining trust in Moscow."

Kirillov concluded: "Work has been organised by the ministry of defence to counter possible provocations from the Ukrainian side: forces and resources have been put in readiness to perform tasks in conditions of radioactive contamination."

Ukraine's Western allies have dismissed any suggestion that Kyiv is building or planning to use a dirty bomb, and Ukrainian President Volodymyr Zelenskiy said the accusation was a sign that Moscow was planning such an attack itself and would blame Kyiv.

Russian Foreign Minister Sergei Lavrov was dismissive of their responses.

"The unfounded denials of our Western colleagues, saying all this is fiction and that Russia itself plans to do something similar in order to later blame the Zelenskiy regime - this is not a serious conversation," he told reporters after a meeting of the Valdai International Discussion Club.

The Russian defence ministry said military Chief of General Staff Valery Gerasimov had spoken to his US and British counterparts by phone on Monday to discuss the possibility that Ukraine could use a "dirty bomb".

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(Edited by : Sangam Singh)

First Published:Oct 25, 2022 7:08 AM IST