The US withdraw would have been known by the British government for months and the UK Secretary of State for Defence, @BWallaceMP would have been briefed daily.
He knew it was a looming mess.
If the UK and EU can't agree a trade agreement with the EU due to other things like the #COVID19 pandemic then it will need to agree an extension of 1 or 2 years by 30 June.
2/ A agrement to extend the 'transition' period needs to be made by 30 June and it isn't as 'easy' as extending #Article50 was because each of the EU27 needs to be asked, which isn't a last last-minute thing.
3/ Civil and diplomatic service grandees, including Ivan Rogers, Philip Rycroft and Gus O'Donnell have called for an extension to the transition period to deal with #COVID19
"It is simple common sense"
Philip Rycroft, former head of the Brexit department