Jonathan Reilly @thejonnyreilly
NEW: Western officals have "serious concerns" Russia could use "non convential" e.g chemical weapons in Ukraine.
They warn that Russia is "tightening the noose" on Kyiv and warns it will be "utterly horrific" when forces do move on the capital.
I've seen pictures today of people hiding in the Kyiv underground saying they think they are safe.
I'm not convinced.
Russian military tactics involve bombing hospitals to maximise horror, destruction and fear.