As Iran's closure of the Strait of Hormuz roils the global economy, one German town has been scrambling to help make up the shortfall in essential supplies of fertilisers.
Wittenberg, better known to many as a cradle of the Protestant Reformation, is also home to a chemical plant founded in 1915, in the midst of World War I.
At that time the aim was to produce nitrogen for explosives and fertilisers to circumvent a blockade which prevented certain raw materials being imported from Chile.
