Today's running order
The United States has warned it is ready to take further action against the Syrian government, hours after it fired a barrage of cruise missiles at a Syrian airbase. David Willis is the BBC’s correspondent in Washington.
A man being held in connection with the lorry attack in Sweden has been arrested on suspicion of "terrorist crimes through murder", Swedish prosecutors said on Saturday night. Maddy Savage is the BBC’s correspondent in Stockholm and Dan Smith is director of the Stockholm International Peace Research Institute.
New research has found that pair-bonded puffins that travel similar migration routes are more successful breeders in the next season. Annette Fayet is Oxford research fellow and head author of the study.
We know why Donald Trump launched an attack on the Syrian air base, but what will he do next? John Allen was Commander of International Forces in Afghanistan before becoming President Obama's special envoy to the Coalition to Counter Islamic State.
In this week's Meet the Author interview James Naughtie has been speaking to the novelist Scarlett Thomas about her switch to writing for children.
International Trade Secretary Liam Fox was ridiculed this week for writing an article saying Britain and the Philippines had 'shared values' ahead of a meeting with President Duterte, who is fond of extra-judicial killings. Should striking trade deals take precedence over standing up for human rights abroad? Lord Marland is former trade envoy for David Cameron and chairman of the Commonwealth Enterprise and Investment Council and Kate Allen is director of Amnesty International.
What impact will the US missile attack on a Syrian air base have on international relations? Sebastian Gorka is deputy assistant to the president of the United States.
This morning several UK newspapers are warning that relations between the United States and Russia are strained to the point of ending. Ed Lucas is senior editor at the Economist and expert on Russia.
Tomorrow marks the centenary of Duchamp's The Fountain. The urinal which was already made – or "ready-made" - launched the 20th century's controversial obsession with conceptual art. Estelle Lovatt is an art critic and Glynn Thompson is an art historian who has investigated The Fountain's real origins.
A man being held in connection with the lorry attack in Sweden has been arrested on suspicion of "terrorist crimes through murder", Swedish prosecutors said on Saturday night. Fredrik Reinfeldt is former prime minister of Sweden.
People living in a tiny Bavarian hamlet have been told that, once Britain leaves the European Union, it will become the new geographical centre of the EU. The BBC's Berlin correspondent Jenny Hill reports.
Is the US returning to the role of world's policeman? Lord Ricketts is former permanent representative to NATO and Kamal Alam is former adviser to the British Army on Syrian affairs.
All subject to change.