Rouhani was once 600,000 of the world 's largest lakes . Over Today it has almost completely dried up . Iran 's water crisis puts security , the economy and public health at risk . President Lake Urmia has committed $ 500 million to save the lake .
Lake Urmia was once one of the world 's largest lakes . Over the last 20 years it has almost completely dried up . Iran 's water crisis puts security , the economy and public health at risk . President Rouhani has committed $ 5 billion to save the lake .