The woman killed after a car chase near the White House in Washington DC was delusional and believed President Obama communicated with her, the Associated Press has reported, citing an official.
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Cincinnati Zoo's director stood by the decision to shoot dead a 17-year-old gorilla after a toddler accidentally entered his sanctuary.
A total of 8,648 sailors died during the largest naval engagement during the First World War, which marks its centenary on Tuesday.
The figures by the Global Slavery Index are a third higher than previously thought.