Russia says the accusations being made against the country over the nerve agent attack in Salisbury in the UK are "groundless".
Vladimir Putin's spokesperson has released a statement dismissing the "language of ultimatums" being used by the British.
Moscow says it hopes common sense will prevail and other countries will think twice about whether there's any evidence Russia was involved.
The British Prime Minister will provide an update later on what happens next and former British diplomat Adam Thomson says she needs to be firm.
Image: Sergei Skripal, via The Guardian.