BBC's most experienced correspondents bring you compelling interviews on every subject. From devastating natural disasters to inspiring triumphs of the human spirit, BBC Newshour has the world covered.
Britain has formally notified the European Union of its intention to leave, initiating a period of negotiations. UK Prime Minister Theresa May said it marked a "historic moment" and a "unique opportunity". The triggering of Article 50 gives both sides two years to reach agreement unless both sides agree to extend the deadline for talks.
(Photo: Britain's ambassador to the EU Tim Barrow delivers British Prime Minister Theresa May's formal notice of the UK's intention to leave the bloc under Article 50 of the EU's Lisbon Treaty to European Council President Donald Tusk in Brussels. Credit: Emmanuel Dunand/AFP/Getty Images)
US-backed forces have paused their offensive against the so-called IS-stronghold of Raqqa to allow engineers to inspect the strategic Tabqa Dam. IS fighters claimed coalition air strikes had jammed the dam's gates, causing water levels to rise dangerously, potentially risking the lives of thousands of people.
Also in the programme: The civilian cost of the battle for Mosul; Thieves steal gold coin weighing 100 kilogrammes.
(Photo: Tabqa Dam near Raqqa. Credit: Reuters)
The elderly and injured, young children and rebel fighters with light weapons are being evacuated from the Syrian city of Homs. Most people will be taken to the city of Jarablus in northern Syria.
Also in the programme: Russian opposition leader Alexei Navalny sentenced to 15 days in prison; US-led anti-IS coalition continues investigation into civilian casualties in Iraqi city of Mosul.
(Photo: Evacuation continues in al-Waer, the last opposition-held district of Homs. Credit: BBC)
Thousands of Russians have taken part in anti-corruption rallies across the country, in defiance of the authorities. The biggest protests were in Moscow, where activists say at least seven hundred people (including opposition leader Alexei Navalny) were detained. We hear from an opposition activist and our correspondent in Moscow.
Also on the programme: Who the House Freedom Caucus are and why they are crucial for President Donald Trump to pass legislation; and the first ever woman to manage an Italian men's football team.
(Image: Police officers detain Kremlin critic Alexei Navalny. Credit: AFP / Evgeny Feldman for Alexei Navalny's campaign)
Carrie Lam, a long-time civil servant, vowed to heal divisions in Hong Kong but pro-democracy activists dismissed the election as a sham. Mrs Lam won more than half the votes of a specially-appointed committee of nearly 1,200 people, most of them loyal to the Chinese government.
Also in the programme: UN aid reaches western Yemen; and what's up with WhatsApp - should technology companies allow access to encrypted material in terrorism cases?
(Photo: Hong Kong's new Chief Executive Carrie Lam. Credit: AP)
The US military has acknowledged that aircraft of the coalition fighting IS in Iraq hit a location in western Mosul where dozens of civilians were reportedly killed. BBC Middle East Editor Jeremy Bowen reports from the city.
Also in today's programme, the failure of US Republican Party attempts to repeal and replace Obamacare cast fresh doubt over the deliverability of the rest of President Trump's agenda. Plus, how an ordinary cat burglar ended up stealing priceless works by Van Gogh.
(Photo: Smoke rises from the Mosul skyline. Credit: Getty Images)