EU Referendum Splits UK Politics

The Conservative Mayor of London, Boris Johnson, has announced he's backing calls for Britain to leave the European Union. His support for the "Vote Leave" campaign pits him against Conservative leader and British Prime Minister, David Cameron, who is leading the campaign to stay in the union.

The situation in Aleppo appears to have become even more complicated. Officials with Syrian rebel battalions, who receive covert backing from one arm of the US government, have said that they've recently begun fighting a rival grouping supported by another arm of the US Government. Is the US fighting a proxy war against itself?

Two worlds will meet next month when a sitting US President visits Cuba, for the first time since 1928. Since then, the Caribbean island has had a revolution, a blockade and the Russians have come and gone. So how will the streets of Havana compare with the streets of Washington DC that Barack Obama is more familiar with?