#BBCtrending: When the Ice Bucket Challenge spread to Iran

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The Ice Bucket Challenge - where people soak themselves in icy water to raise money for ALS - has spread worldwide.

But when Iranians tried to give money to the Amyotrophic lateral sclerosis (ALS) Association - the main US charity people to donate to - sanctions on the country meant they couldn't.

That, plus other levels of confusion and a water shortage in Iran, mean those doing the challenge in Iran have had to adapt, as #BBCtrending reports.

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