Russia launched chemical weapons in Ukraine for the first time on Sunday with footage showing powder falling from the sky over Poposna in the eastern region of Luhansk.

Liudmila Denisova, Ukraine’s human rights ombudswoman, shared a photograph showing the alleged chemical phosphorus bomb.

“The bombing of a civilian city by the Russian attackers with these weapons is a war crime and a crime against humanity according to the Rome Convention,” she said in a statement.

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On Sunday the Polish President warned that if Russia uses chemical weapons in Ukraine this could lead NATO to rethink its position over the war.

Andrzej Duda told the BBC’s Sophie Raworth on Sunday, “If he (Putin) uses weapons of mass destruction, this would be a gamechanger in the whole thing.

“For sure, [NATO]… would have to sit at the table and they will really have to think seriously what to do, because then it starts to be dangerous, not only for Europe, but the whole world.”

On Sunday Russia bombed a NATO training facility in Western Ukraine with 30 cruise missiles just a few miles from the Polish border.

The training facility was laden with weapons and when the facility blew up is caused the “rattling of windows” in the NATO country of Poland.

Mark Austin, a Sky News presenter, gave a stark warning that the world was a “tiny miscalculation” away from a major global war.

Austin tweeted, “Good morning, Russian bombing of western Ukraine is now rattling windows across the border in Poland…a NATO country.

“We are now a tiny miscalculation away from a much broader war here.

“That is the reality of the horror Putin is unleashing on Ukraine for no reason.”

Ukrainian defence minister Oleksii Reznikov tweeted, “This is new terrorist attack on peace and security near the EU-Nato border. Action must be taken to stop this. Close the sky!”