CNN's Melissa Bell looks into the timeline behind the military grade nerve agent attack against former Russian double agent Sergei Skripal and his daughter Yuilia in Salisbury on March 4. ... read more

The first polar bear cub to be born in the UK in a quarter of a century will take its first steps in public Wednesday. ... read more

A group of schoolgirls kidnapped last month in Nigeria by the terror group Boko Haram have been released and returned to their hometown of Dapchi, Nigerian presidential aide Garba Shehu told CNN on Wednesday. ... read more

The suspect in a series of parcel bombings in Texas is dead after a police operation, media say. ... read more

Many of the 110 schoolgirls kidnapped by Islamist militants in February have returned home, reports say. ... read more

Laura Clode has been at a mental health unit at Llandough Hospital since last June. ... read more

Dr Aleksandr Kogan says he is "stunned" by allegations made against him by Facebook and Cambridge Analytica. ... read more

Roxcanne Deschamps, a family friend who cared for Florida shooter Nikolas Cruz, said she forbade him from bringing his guns into her home and warned police several times that he might have a weapon and harm himself or others. ... read more