concerns over ukraine top the agenda. and a bbc investigation finds that hundreds of dogs are being smuggled out of illegal puppy mills in eastern europe. hello and welcome. the head of mi5 has said he is profoundly sorry that the security service did not prevent the manchester arena bombing in 2017. the chair of the inquiry, sirjohn saunders, found that intelligence could have led to the suicide bomber, salman abedi, being stopped in the days before the attack. 22 people were killed in the attack. danny savage reports. nearly six years on from the atrocity of the manchester arena, a thorough report has concluded the security services missed a significant chance to take action, which may have prevented it. i take action, which may have prevented it. prevented it. i have found a significant prevented it. i have found a significant missed - prevented it. i have found a i significant missed opportunity to take action that might have prevented the attack. there was a realist