Ah, all the fault of the "liberal Left" which I think includes such obvious commies as Sir Roger Gale, Theresa May, and Sir Bob Neill. "Arcane piece of international law" = a treaty we signed in January to great fanfare, having been the subject of an election campaign. https://twitter.com/DPJHodges/status/1303329278101250048

As for "rally the nation", no more than the Foreign Secretary or mostly Conservative MPs rightly concerned about China breaking international commitments with regard to Hong Kong. Or is Dominic Raab also "the liberal Left"? https://twitter.com/DPJHodges/status/1303329278101250048

International law, very boring and worthy until you realise it is your own strategic and commercial interests which are adversely affected because others don't respect it. Which is why the Foreign Office made it a key goal. Under that liberal leftie *checks notes* William Hague.