The UK is "concerned" that Vladimir Putin may use chemical weapons in Ukraine after his troops bombed a children's hospital in the besieged city of Mariupol.
Liz Truss warned it would be a "grave mistake" on Putin's part if he were to do so, adding to the litany of errors he has made since invading Ukraine.
The Foreign Secretary's chilling remarks comes hours after Western officials expressed "serious concerns" that Russia could use chemical weapons.
