@bbclysedoucet via Twitter
Back in London - great to have been in #Iran. Only wish I could have taken all my Iranian friends who are longing to go home.
Crimea votes on whether to rejoin Russia or stay with Ukraine in a referendum condemned as "illegal" by Kiev but backed by Moscow.
The death of Chinese activist Cao Shunli in hospital detention prompts protests from the US and human rights groups.
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A weekly round-up of global health stories from the BBC World Service.
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