![](http://www.telegraph.co.uk/telegraph/multimedia/archive/00674/monbiot-404_674605c.jpg)
Security guards blocked the path of columnist and activist George Monbiot, who tried to make the arrest as Mr Bolton left the stage.
(snip)
"This was a serious attempt to bring one of the perpetrators of the Iraq war to justice, for what is described under the Nuremberg Principles as an international crime," he said.
(snip)
During Mr Bolton's talk, to a packed-out audience, Mr Monbiot had asked Mr Bolton what difference there was between him and a Nazi war criminal.
Mr Bolton said the war was legal, partly because Iraq had failed to comply with a key and binding UN resolution after the end of the Gulf War in 1991.