There have also been many attacks on non-military and civilian targets , beginning in earnest in August 2003 and steadily increasing since then . These include the assassination of Iraqis cooperating with the Coalition Provisional Authority and the Governing Council , considered collaborators by the guerrillas , and suicide bombings targeting the United Nations headquarters , the Jordanian Embassy , Shi'a mosques and civilians , the International Red Cross , Kurdish political parties , the president of the Iraqi Governing Council , hotels , Christian churches , diplomats and restaurants . Armed and unarmed Iraqi police and security forces are also targeted , because they are also considered collaborators . Sometimes they are killed in ambushes and sometimes in execution-style killings . Militants have targeted private contractors working for the coalition as well as other non-coalition support personnel
United Nations headquarters
Canal Hotel bombing
Tactics of the Iraqi insurgency