The wife of Russian ex-spy Alexander Litvinenko has said she is "very pleased" over the decision to hold a public inquiry into his death.
Speaking to reporters, Marina Litvinenko said it still may take a "long time" to get the truth.
Mystery has surrounded the death of the KGB officer, after he died drinking tea laced with radioactive polonium-210 at a London hotel in 2006.
Earlier today, Home Secretary Theresa May announced the inquiry into his death in a written ministerial statement, saying: "I very much hope that this inquiry will be of some comfort to his widow."
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Mladic, now 75, was the military commander of Bosnian Serb forces in the 1990s, who fought against the Bosnian Croat and Bosniak armies.
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His representatives said Cassidy, who was hospitalised last week, died "surrounded by those he loved."