Marina Litvinenko, wife of former KGB agent Alexander Litvinenko, at a press conference in London yesterday: “I am relieved and delighted with this decision. Photograph: Reuters/Luke MacGregor

The fatal poisoning in London of a former KGB agent who had become a public critic of Russian president Vladimir Putin is to be investigated by a publ(...)

The British government is expected to announce today that a public inquiry will be held into the death of poisoned ex-Russian spy Alexander Litvinenko.  Photograph: PA.

The British government has announce today that a public inquiry will be held into the death of poisoned ex-Russian spy Alexander Litvinenko. Mystery h(...)

No smoking gun

Cui bono? Who benefited from the 2004 death of Yasser Arafat ? With the publication of the report of a group of Swiss scientists which “moderately sup(...)

Director of Lausanne University Hospital’s forenics centre Patrice Magnin (right) and director of its Institute of Radiation Physics Francois Bochud (centre) speak during a news conference in Lausanne yesterday. Photograph: Reuters/Denis Balibouse

The remains of Palestinian leader Yasser Arafat showed test results consistent with polonium poisoning and should lead to a judicial investigation eve(...)

Yasser Arafat pictured in 1994. Reuters/Ahmed Jadallah.

Palestinians have blamed Israel for the death of Yasser Arafat after Swiss forensic tests confirmed that he was poisoned to death in 2004 with radioac(...)

Alexander Litvinenko, 43, was poisoned with radioactive polonium-210 while drinking tea at the Millennium Hotel in London’s Grosvenor Square in 2006. Photograph: PA.

The widow of poisoned spy Alexander Litvinenko tonight accused a coroner of abandoning “his search for the truth about Russian state responsibi(...)

Exiled: Boris Berezovsky in 2002 in Surrey, where he lived until his death. Photograph: John Downing/Hulton/Getty

They called him the godfather of the Kremlin, the master of chaos and Russia’s modern-day Rasputin. But Boris Berezovsky’s reputation hid the r(...)

Reporters and witnesses file into The Guildhall for a coroner's inquest into the death of Boris Berezovsky in Windsor, England. The Russian tycoon was found dead in his home in Ascot on March 23rd. Photograph: Getty

Russian oligarch Boris Berezovsky, who died in a mansion near London in unexplained circumstances last weekend, was found lying on the floor of(...)

A police officer stands guard yesterday  outside the home of Boris Berezovsky in Ascot, Berkshire. Photograph: Steve Parsons/PA Wire

A postmortem examination on Russia n oligarch Boris Berezovsky has found he was hanged, police said. The examination by a Home Offic(...)

Boris Berezovsky stands at the Highgate Cemetery graveside in London of Alexander Litvinenko, accompanied by  the former security service agent’s widow Marina, who has cast doubt on rumours of suicide related to the Russian oligarch’s death. Photograph: Stefan Rousseau/PA Wire

Russia n prosecutors say the death of exiled oligarch and Kremlin critic Boris Berezovsky will not stop them trying to reclaim property he alle(...)