Bruce Arnold: Division in UK will hurt us all as anti-EU tide rises
The Eastleigh by-election has put British Prime Minister David Cameron under threat for not turning back the UKIP tide, having established a Conservative strategy to do just that with a referendum on Britain's membership of the EU.
UKIP wants to end that membership. Mr Cameron does not. But he does want to change it significantly, with reforms restoring greater democracy and restraining other threats to sovereignty.
That sovereignty is, in part, vested in Britain remaining outside the euro and protecting its biggest industry – financial services.