CIA deputy director David Cohen said: 'They were plotting to kill a huge number – tens of thousands of people at this concert.'
![Vienna talks [Getty]](/sites/default/files/styles/image_156x88/public/media/images/25812D5C-6C62-49E4-B77C-7B16E6336D67.jpg?h=d1cb525d&itok=arjffsNX "Vienna talks [Getty]")
![Mikhail Ulyanov [Getty]](/sites/default/files/styles/image_156x88/public/media/images/4B6C1E1D-30EA-4B57-B19C-1F5603707F56.jpg?h=d1cb525d&itok=krf-NiAb "Mikhail Ulyanov [Getty]")