If Britain votes to exit the European Union, Washington would lose its key advocate for US interests within the bloc. But some argue that Brexit would strengthen Britain economically, making it a stronger ally.
The referendum on Britain's future in the EU has split the usual blocs and created alliances across party lines. Those odd groupings may be a means to mending the country's divides following the June 23 vote.
How the killing of British member of Parliament Jo Cox influences British voters can be debated long after the June 23 referendum on Brexit. But the tragedy has already created a shift in the tone of debate.