Arlene Foster has led Northern Ireland into crisis – and Westminster is strangely quiet

The Democratic Unionist Party's scandal could prove embarrassing for a UK government in need of parliamentary votes.

Arlene Foster was set to chalk up her first 12 months in charge of Northern Ireland today but that milestone has now been cut short by her own appalling hubris.

For the uninitiated, the First Minister introduced a renewable energy subsidy in 2012 that was so botched it is predicted to saddle Northern Ireland with a £500m liability.