When the IRA commits a particularly unpopular murder, It has three main choices: brazen it out, deny it or say “Ooops, sorry” and if possible blame the Brits. 

The murder in Londonderry on Thursday night of my friend, the much-loved 29-year-old journalist and writer Lyra McKee, has posed the New IRA a serious problem. The murder caused a massive outcry internationally (Theresa May called it “shocking and truly senseless”, Taoiseach Leo Varadkar denounced it as an act of “fear, hate and cowardice and Bill Clinton claimed to be “heartbroken”), and the locals are outraged too.

There are echoes of previous murders, after which there was public revulsion.