CEP Senior Advisor Sir Ivor Roberts quoted: "Counter-terror expert Sir Ivor Roberts said it remains 'unclear how much has been learned from this tragedy'."

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

"Sir Ivor, from the Counter Extremism Project, and former head of counter-terrorism in the Foreign and Commonwealth Office, said the attack could be attributed ‘in significant part, to the failure of the intelligence community to monitor...

CEP Senior Advisor Sir Ivor Roberts quoted: "Counter-terror expert Sir Ivor Roberts said it remains 'unclear how much has been learned from this tragedy'.