NEW : The United Nations and US Embassy in Baghdad condemn the attacks . More than 100 people are injured . , the group predicted in a January 2011 report that a low level of conflict in Iraq would continue to claim a number of civilian lives for years to come . Official : More coordinated attacks have been seen since U.S. forces withdrew . Iraq hosts an Arab summit on March 29 .
NEW : The United Nations and US Embassy in Baghdad condemn the attacks . More than 100 people are injured . Official : More coordinated attacks have been seen since U.S. forces withdrew . Iraq hosts an Arab summit on March 29 .