Brussels Attacks: 'Islamic State' in Europe

Belgium is observing three days of national mourning in memory of the victims of the suicide bombings at the main airport in Brussels and one of the city's metro stations. The BBC's investigative programme, Panorama, has gained a fresh insight into how so-called Islamic State operates in Europe.

It's been a mixed night for the US presidential front runners, Donald Trump and Hillary Clinton. They have won their parties' primaries in Arizona, but are set for defeat in Utah.

A new study has found that humans and lions can coexist - without fences.