this is bbc news, i'm david eades with the latest headlines for viewers in the uk and around the world. systemic failures revealed in the way police responded to the mass killing at a texas school in may, when 19 children were among the dead. if we need a simple phrase to describe what the report says, again i would tell you, multiple systemic failures. wildfires triggered by extreme heat burn across southern europe. the high temperatures claim more than 1,000 lives. ukraine's president zelensky fires the head of the country's security agency and the prosecutor general, citing cases of treason in the two organisations. the five conservative mps hoping to replace