sharif abdel kouddous and i interviewed tony benn in 2009, one day after he led a protest against thean in london. at the lower -- at the rally, he and others read the names of those killed in the afghan war. >> well, it was a solemn occasion when the names were read. you see, i think you have to understand history. written and dated afghanistan in 1839, captured kabul, and was defeated the following year and 15,000 british troops were killed. britain invaded afghanistan in 1879. britain was in afghanistan in 1919. the russians were in afghanistan to protest that. united states government, president bush, the first one, by the russians to get them out of afghanistan. the situation we're in now is very straightforward. the united states and nato, 40 inntries with 64,000 troops eight years, have been unable to defeat the taliban and. this is the vietnam war for america. and for the rest -- well, for the people involved, soldiers and civilians, it is an absolute tragedy. >> and obama defended the war yesterday, calling it a war of necessity. your response to that? >> i think you have to