Ten Things You Need to Know Today: Monday 4 Apr 2016

1. Panama Papers: Leak reveals Putin's offshore funds

Yesterday, around 100 news organisations worldwide published details of what may be the biggest leak of secret documents ever. There are 11.5 million files, stretching back more than 40 years of Panama-based law firm Mossack Fonseca's records and outlining the offshore funds of the super-rich - and of world leaders including Vladimir Putin.

Putin and the Panama Papers: The Kremlin's web of cash

2. Panama Papers: Iceland PM and Fifa hit by crisis

Iceland's Prime Minister, Sigmundur David Gunnlaugsson, is facing calls for a snap election after the Panama Papers leak revealed he failed to declare an interest in an offshore firm, Wintris Inc. Meanwhile, The Guardian says the leak will cause crisis at Fifa, with links disclosed between its ethics committee and the people it is investigating.

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IMF: Information sharing plan as Panama Papers fallout continues

3. Greece starts sending migrants back to Turkey

The first boatload of migrants returned from Greece as part of a Turkish-EU deal has arrived in Turkey. The boat was one of a fleet that left Lesbos and Chios carrying around 200 migrants. A spokesman for the Greek government said most had come from Pakistan. Migrants protested in Greece.

Islamic State targets vulnerable refugee children for recruitment

4. Steel crisis: Cameron urged to take control

Union leaders have urged David Cameron to take personal charge of talks to prevent the closure of Tata Steel's Port Talbot plant after the Indian company voted to sell its UK operation. Tycoon Sanjeev Gupta is thought to be considering buying the Port Talbot works in Wales while investment firm Greybull is said to be willing to put £400m into the Scunthorpe plant in Lincolnshire.

5. Chelsea appoint Antonio Conte as new coach

Italy boss Antonio Conte is the new first team coach at Chelsea. He will take over at Stamford Bridge after leading Italy at Euro 2016. The 46-year-old ex-Juventus boss has agreed a three-year contract with the deposed Premier League champions, who sacked Jose Mourinho in December. Interim boss Guus Hiddink will remain in charge until the end of the season.

6. IMF chief Lagarde: WikiLeaks Greece claim 'nonsense'

Christine Lagarde, the head of the International Monetry Fund (IMF), has dismissed as "nonsense" claims the body is deliberately trying to push Greece towards defaulting on its debts. On Saturday, whistle-blowing website WikiLeaks released an alleged transcript of an internal meeting which implied the IMF is actively seeking default.

Will 'breakthrough' deal solve Greece's debt problems?

7. Trump faces campaign setback in Wisconsin

US presidential hopeful Donald Trump is expected to lose the Wisconsin primary to his Republican rival, Ted Cruz. Polls give Cruz a margin as high as ten per cent after Trump suffered the worst week of his campaign so far. Analysts say Wisconsinites highly value civilty, never Trump's strong suit.

8. Air France staff threaten Iran headscarf mutiny

Female Air France flight attendants have said they will refuse to fly to Iran after being ordered to wear headscarves when they leave the plane in Tehran. Women in Iran have been required to cover their heads since the 1979 revolution. However, in France, religious headscarves are banned in state schools and offices and it is illegal to wear the full-face veil in public.

Air France staff in mutiny over headscarves order

9. Joe Medicine Crow, link to Little Bighorn, dies aged 102

Native American chief Joe Medicine Crow, a living link to the Battle of Little Bighorn, has died at the age of 102. As a boy, Crow was trained to be a warrior by his grandfather, who had been a scout for General Custer at his 1876 "last stand". A decorated war hero and a historian, Crow was the first of his tribe to gain a master's degree, in 1939.

10. Briefing: What will happen to the pound if UK votes for Brexit?

Of all the consequences of the referendum for the UK's membership of the European Union, the fate of the pound on currency markets would not appear to rank highly. With issues relating to immigration, sovereignty and jobs all seemingly at stake, exchange rates may seem like a marginal issue - but fluctuations in the pound could have a profound effect on the wider economy.

Three ways to get the most holiday money for your pound