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Vladimir Putin has signed a law formalising Russia's annexation of Crimea, as European leaders placed new sanctions on political and business figures said to be close to the Russian president. We ask whether the Russians will brush these off as easily as they did the first set of sanctions - and what longer term damage there could be to trade between Europe and Russia.

Also advocates of an independent Venice tell us Venetians have overwhelmingly voted to secede from Italy in an online poll this week. Plus the US company delivering medicines by drone.

And, with World Water Day on Saturday, we're joined throughout the programme by Duncan Goose of One Difference, an organisation that sells bottled water to help fund access to clean drinking water in Africa.