A BBC News pointer to a Chatham House report; it starts with:Link:http://www.bbc.co.uk/news/world-40415756The world's food security is increasingly reliant on 14 "chokepoints" for trade, a think-tank report has warned.
UK-based Chatham House says more needs to be done to protect key transport routes such as the Panama Canal, the Suez Canal and the Turkish Straits.
Almost 25% of the world's food is traded on international markets.
This, the report says, makes food supply and prices vulnerable to unforeseen crises or climate change.
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