Prime Minister David Cameron told the House of Commons today that the U.K. should stay in the European Union. But London Mayor Boris Johnson, a member of Cameron's Conservative Party, has come out against staying in the E.U.
With the battle lines being drawn, the campaign is underway ahead of a public vote on the so-called "Brexit" or Britain leaving the E.U., on June 23. The BBC's Rob Watson joins Here & Now's Jeremy Hobson with details.
- Rob Watson, U.K. political correspondent for BBC World Service. He tweets @robwatsonbbc.
This segment aired on February 22, 2016.