Boris Johnson fears 'barbaric' Kremlin regime could unleash banned chemical weapons on Ukraine

Boris Johnson says he fears Russia could use chemical weapons on Ukraine.

The Prime Minister has accused Vladimir Putin of a 'cynical' attempt to manufacture a pretext for their use.

He said he feared the 'barbaric' regime in the Kremlin may be ready to use the banned weapons because the invading Russian forces have failed to make the progress expected.

His warning came as the UK stepped up its sanctions on oligarchs deemed to be close to the Putin regime, including Chelsea owner Roman Abramovich.

The UK has already accused the Russian government of war crimes, with the bombing of a maternity hospital in Mariupol being the latest atrocity in the campaign. Western allies fear Moscow could go further and carry out a chemical attack, potentially under the cover of a 'false flag' operation.

"The stuff which your are hearing about chemical weapons is straight out of the Russian playbook," Mr Johnson told Sky News in an interview today. They start saying that there are chemical weapons that are being stored by their opponents or by the Americans, so that when they themselves deploy chemical weapons – as I fear they may – they have fake story ready to go."

In a reference to the Salisbury nerve agent attack, he added: "You have seen it in Syria, you saw it even in the UK. I just note that is what they are already doing. It is a cynical, barbaric government I’m afraid."

His comments came as it was confirmed three people - including a young girl - were killed in the bombing of a hospital in Mariupol yesterday, the city's council announced, with 17 said to have been injured.

Speaking on Sky News' Beth Rigby Interviews programme, the prime minister said the only way the war in Ukraine can end is if the Russian president