Some are calling it Novichok II. Just a few kilometres from where a former Russian spy and his daughter were poisoned four months ago, a local couple are in critical condition, victims of the same military grade nerve agent. Moscow again denies unleashing Novichok and offers to help in the probe - help once again rejected by London. Is this a new attack, or were the couple collateral victims of the remnants of the first poisoning?
Produced by Charles WENTE, Alessandro XENOS, Laure FOURQUET.
France 24 correspondent in London
Dimitri DE KOCHKO
International Affairs Editor, France 24