Not long after Amy Bishop shot her colleagues in Huntsville, authorities in Massachusetts released decades-old documents about the death of her brother.

NEWYORKER: A Loaded Gun

It also emerged he had met Italian academic Mario Scaramella at the Itsu sushi restaurant in central London, where he is said to have received documents about the death of Mrs Politkovskaya, a long-term critic of the FSB.

BBC: Who was Alexander Litvinenko?

It asked the United States to provide Russian consular representatives the relevant forensic documents, including a death certificate.

CNN: Russia concerned over adopted boy's cause of death