Franglais:
can’t see this being a scam by May.
No way could it possibly be a May,EU/Ukraine/US,false flag set up of Putin to create project fear and support for more EU/NATO rattling of the bear’s cage,all having a clear motive and opportunity.
As opposed to Putin supposedly used a hit squad based at the Russian embassy to deliver a chem WMD downgraded to just make any victims it contacts ill and stable in hospital and that can be easily washed away in a domestic washing machine and shower without it hurting anyone,with Putin’s calling card conveniently attached.All to attack a rival/traitor/double agent on the streets of Salisbury,who Russia had previously released from a Russian prison and somehow conveniently ended up here.The only possible motive for going to all that trouble as opposed to a bullet in the head obviously being a warning to the UK government.
In which case why would Putin have then replied to May’s idiotic ultimatum with a reference to ( threat of ) Russia’s ‘nuclear’ WMD’s status ?.As opposed to him saying yes that was meant,just as it looks,as a chem WMD warning and if you don’t stop messing about on our borders we’ll deliver the real thing ?. 
So what did NATO do.Did it kick out every bleedin Russian ‘diplomat’ in the west and threaten Russia with a bigger relatiatory WMD strike which would have settled the whole thing and then we all could have got on with Brexit.No.
Feel free to explain why.Bunch of cowards trying to start a fight with Russia as part of another agenda and which they haven’t even got the bottle to go through with if Russia actually bites at some point.