Widow of Alexander Litvinenko says an expanded investigation would bring justice . He died at a London hospital November 23 , 2006 , after being poisoned by the radioactive material polonium-210 while drinking tea at the Millennium Hotel in London 's Grosvenor Square . That investigation is called a ` ` public inquiry '' in Russia . The coroner asks for a public inquiry instead of an investigation . National security issues can be discussed behind closed doors in public inquiry .
Widow of Alexander Litvinenko says an expanded investigation would bring justice . That investigation is called a ` ` public inquiry '' in Russia . The coroner asks for a public inquiry instead of an investigation . National security issues can be discussed behind closed doors in public inquiry .