. > e summer of 69 in belfas eight people werkilled in one week in gust.t was so bad that the army had to be called i >> we have found se more bombs. they are behind the roadblock. >>it started with catholics clashing with police in londonderry. it ende with hundreds o famies being burned outf their homes in belft. it was mainly catholics who were attacked by protestan. but there were sectarian attack on both sides. cholicsbelieved they were being treated as second-class citizens in ireland. protestants re afraidhat they were facg an armed volt. the result wamayhem. >> i went out the back door of my chuh last night and saw my sunday school making petrol bombs on the back steps of the urch. ucb effect upon people, e scars, wounds, tir lives are wrecked. the minds are warped and twisted for life. >> 4 years on, he recalls how some of the teenagers he trd to turn away from violencended up in jail >> i remembetwo of them saying to mehat they wisd to god that they had listened to . they said that theyhought i might tually get medal because they were fighting fo

there are now 62,000merican oops in that cntry andhree more werkilled there tay. morehan 160 americans have died so far this year whi has us wondering, what will be the measure of their success? as nick scer of al jazeera english reports, it's a question the oba administration has been thinking about aswe. >>his is not a war of choice. a war of necessity. those whoattack america on 9/11 are plottingo do so again. >> reporter: they are callin afghistan, obama's war,and this week the americanresident was seing it again. polls suggest suort for the u.s. troop prence in that down at around40%. to fit that growing skepticism, obama last march omised to show vote meurable progress with benchmarks of 50or so metrics. >> going forward, we'll not blindly stay the course. instead, will set clear metrics to measure progress and hold ourselv acountable. >> reporter:.s. casualty numbers willlmost certainly figure on a list of metrics. so likely will numberson overall security and civilian casualties. secret now, the metrs will soon be made puic every three months becau afghani