http://news.yahoo.com/s/ap/20091026/ap_on_re_mi_ea/ml_iraq]Baghdad steps up security after bombs kill 155 (AP)[/URL]



AP - Iraqi security forces blocked streets around the capital Monday and conducted intense searches at checkpoints as authorities investigated the massive security failure that allowed two truck bombs to strike what was supposed to be one of the city's safest areas and kill 155 people.