Turkish forces are accused of civilian casualties in two separate incidents.
ISIS attacked security forces in several locations near Baghdad.
Operation Claw left almost a dozen casualties in northern Iraq.
Two mass graves were discovered in Anbar and Nineveh.
At least 287 were killed or found dead during May, and another 203 were wounded. The numbers are slightly higher than in April.
Kirkuk was the scene of several bombings
Fighting between Turkish forces and PKK guerrillas left two Turks dead.
Turkey launched a new operation against PKK guerrillas in northern Iraq.
A helicopter pilot was injured when he was shot during operations.
Five people were killed, and another eight were wounded, when car bomb exploded in Owainat. Also, three French citizens were convicted on terrorism charges in an Iraqi court and sentenced to death. They still have the right to appeal.